Within SOM 1 01
Can Old Film Stock Date the SOM 1 01 Photos?
Even if the film stock was manufactured in 1954, that does not establish when the photographed pages were created or when the film was exposed.
On this page
- What the reported film stock date would establish
- Why manufacture date differs from exposure date
- What custody evidence would be needed to strengthen the claim
Page outline Jump by section
Introduction
The reported 1954 Kodak Tri-X film associated with SOM1-01 is, at most, evidence about the age of the photographic stock. It does not establish when the alleged manual was printed, when its pages existed, or even when those pages were photographed. That distinction is crucial because SOM1-01 reached researcher Don Berliner anonymously in 1994 as undeveloped 35 mm film, rather than as an original paper manual with a documented government chain of custody. Proponent Robert M. Wood states that the Tri-X itself was manufactured in 1954 and argues that this means the photographs “might have been taken as early as” that year.[SOM1-01]specialoperationsmanual.comSOM1-01SOM1-01 Overview & AuthenticationSOM1-01SOM1-01 Overview & Authentication
The first proposition may be useful if the film-stock dating is independently verified. The second does not follow from it. Photographic film can be stored unused and exposed much later. Kodak’s own technical guidance treats manufacture, exposure and processing as separate events, while archival practice likewise uses film manufacturing codes as constraints rather than exposure dates.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm
What a 1954 film-stock date would establish
Kodak confirms that Tri-X was introduced in 1954. Its corporate history lists Kodak Tri-X Film among the company’s 1954 introductions, while independent histories distinguish the earlier sheet-film version from the 35 mm and 120 roll-film formats released in 1954.[Kodak]kodak.comMilestones | KodakMilestones | Kodak… That makes identification of genuine early Tri-X potentially relevant to SOM1-01, but only in a limited way.
Wood’s authentication presentation makes the stronger, SOM1-01-specific claim: Berliner received undeveloped 35 mm Tri-X film and the stock had been manufactured in 1954. The presentation then says that this fact suggests the photographs “might have been taken as early as” 1954.[SOM1-01]specialoperationsmanual.comSOM1-01SOM1-01 Overview & AuthenticationSOM1-01SOM1-01 Overview & Authentication That wording is important. Even the proponent argument describes an earliest possible period, not a demonstrated exposure date.
Film manufacturing codes work in essentially that fashion. Preservation guidance explains that Kodak placed manufacturing information along film edges and that these markings can help establish when the stock was made. But Kodak’s older codes were sometimes repeated in cycles, so identifying the stock can require additional evidence. The National Film Preservation Foundation specifically warns that an edge code may identify several possible manufacturing years and recommends using other datable information to narrow the result.[Paperzz]paperzz.comMellon Guide.qxdMellon Guide.qxd - National Film Preservation Foundation… The Smithsonian similarly describes a Kodak edge code on a surviving V-Mail strip as denoting the year in which the film reel was manufactured.[Smithsonian Institution]si.eduSmithsonian Institution V-Mail microfilm strip | Smithsonian InstitutionSmithsonian Institution V-Mail microfilm strip | Smithsonian Institution
That distinction produces a simple evidential hierarchy:
- Manufacturing date: when Kodak produced the film stock.
- Exposure date: when light from the SOM1-01 pages formed latent images on that film.
- Processing date: when the exposed film was chemically developed into visible negatives.
- Document-production date: when the pages being photographed were actually printed or assembled.
A date for the first event does not automatically date any of the other three.
There is also a chronological complication specific to SOM1-01. The alleged manual carries an April 1954 date, whereas 35 mm Tri-X itself became commercially available later in 1954 according to histories of the product.[johnnymartyr.wordpress.com]johnnymartyr.wordpress.comhappy birthday kodak tri xHappy Birthday Kodak Tri-X!November 1, 2017 — 1 Nov 2017 — Kodak Tri-X was originally introduced sometime in 1940 but November 1st, 1954… That need not prove the manual false, because a document printed in April could obviously have been photographed months or years later. But for exactly the same reason, the film cannot authenticate an April 1954 production date. The photographic medium and the photographed object have separate timelines.
Why manufacture date is not exposure date
Unexposed film is a physical commodity that can remain in storage after manufacture. Kodak explicitly describes unprocessed photographic film as a perishable product whose characteristics change gradually after manufacture, and advises users to store it appropriately and use it before its recommended processing date. Refrigeration or freezing can slow deterioration, although Kodak cautions that storage should not simply be assumed to extend useful life indefinitely.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm
This matters because nothing inherent in a roll made in 1954 required somebody to put it into a camera in 1954. A roll could be purchased, stockpiled, forgotten, deliberately preserved or acquired second-hand and exposed years later. The longer the interval, the more questions arise about fogging and image quality, especially with high-speed film, but deterioration is not a clock that automatically reveals the exposure year. Kodak notes that temperature, humidity, radiation and other environmental conditions affect unprocessed film.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm
Real-world experience reinforces the basic point. Photographer John Sexton has described successfully using frozen Tri-X more than ten years beyond its expiration date, demonstrating that old stock can remain photographically usable when stored well.[johnsexton.com]johnsexton.comJohn Sexton.comNewsletter - February, 2010… Such examples do not prove that a particular 1954 roll could survive four decades in good condition; its actual condition would depend heavily on storage history. They do show why “old film” and “old photograph” cannot be treated as synonyms.
The reverse problem applies after exposure. Once film has been exposed but not processed, the invisible latent image can itself change with time. Kodak recommends processing exposed film promptly in order to minimise such changes.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm Consequently, the state of an old negative might potentially provide clues about its history under controlled forensic circumstances, but it does not supply a straightforward calendar date without information about storage, radiation exposure, temperature and other variables.
For SOM1-01, therefore, several very different scenarios remain compatible with the bare fact of 1954-manufactured film: it could have been exposed relatively soon after manufacture; it could have remained unused for years before exposure; or old stock could deliberately have been selected much later because its period characteristics would strengthen the appearance of provenance. The film date alone cannot discriminate among those possibilities.
The film does not date the pages it photographed
There is a second inferential jump that is even more important. Suppose, for argument’s sake, that forensic work could establish that the Tri-X was manufactured in 1954 and exposed in the 1950s. That would still date the photographing of the pages, not necessarily their original creation.
Photographs reproduce appearances. They do not ordinarily provide direct access to the paper fibres, ink chemistry, physical impressions, alterations or other properties of the photographed object. Forensic-document literature consequently treats examination of non-original material as more limited than examination of an original. Research published by the American Society of Questioned Document Examiners notes that copying processes can add or remove fine characteristics and that some physical information, such as the depth of an ink line in paper, cannot be recovered from a reproduction.[journal.asqde.org]journal.asqde.orgJune 1, 2022…
Dating disputed documents is itself a difficult forensic discipline. A 2021 review in Microchemical Journal describes estimating document age as one of the more challenging areas of questioned-document examination.[ScienceDirect]sciencedirect.comOpen source on sciencedirect.com. Techniques can involve the physical and chemical properties of inks and other materials; NIST, for example, describes the US Secret Service’s International Ink Library as containing chemically tested ink formulations whose identification can help establish the earliest possible origin of a document.[NIST]nist.govforensic database questioned documents tableforensic database questioned documents table Those are precisely the sorts of examinations that photographs cannot substitute for.
This limitation is unusually clear in the SOM1-01 debate because its own defenders acknowledge it. The SOM1-01 authentication FAQ states that, without the originals, investigators have had to rely on typography, chronology, content and related methods. It expressly says that paper and ink testing of originals would be the decisive way to establish whether those materials came from the claimed period.[SOM1-01]specialoperationsmanual.comOpen source on specialoperationsmanual.com.
That concession defines the proper evidential weight of the Tri-X claim. The film can potentially say something about the carrier on which the surviving images reside. It cannot chemically date the paper or printing material visible inside those images.
Old stock also creates a deliberate-backdating risk
The strongest criticism of the film argument does not require proving that SOM1-01 was forged. It requires only recognising that old photographic materials can be reused.
If somebody in a later period wanted photographs to possess period-compatible physical characteristics, obtaining old film would be one possible route. The more time that passed, the more unusual usable 1954 high-speed stock would become, but rarity is not impossibility. Indeed, Kodak’s preservation guidance explicitly discusses refrigeration and freezing of photographic material, while documented photographers have successfully used substantially expired Tri-X.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm
This creates an asymmetry in the authentication argument. Finding genuinely modern film would be potentially damaging to a claim that the negatives themselves originated in the 1950s, because the film could not have been exposed before it existed. Finding old film does not provide the mirror-image conclusion. An object manufactured in 1954 can still be used in 1964, 1974 or later.
That is the familiar difference between a terminus post quem — an earliest possible date — and a positive date of creation. A material introduced or manufactured in a particular year may rule out earlier production, but it ordinarily cannot by itself rule out later use.
For SOM1-01, the distinction becomes especially significant because the negatives appeared only in 1994. Wood’s account says Berliner received the undeveloped roll through the post, and the dedicated SOM1-01 source history identifies no named photographer whose possession of the film can be traced back to the 1950s.[SOM1-01]specialoperationsmanual.comSOM1-01SOM1-01 Overview & AuthenticationSOM1-01SOM1-01 Overview & Authentication The approximately four-decade evidential gap is therefore not filled merely by dating the raw stock.
What custody evidence would strengthen the claim
The film evidence would become considerably more informative if it could be joined to an independently documented chain of custody. The crucial question is not simply “When did Kodak make this film?” but “Where was this particular roll between manufacture and its arrival in 1994?”
A stronger case would require evidence capable of connecting those stages: original Kodak packaging with verifiable lot information; purchase, laboratory or processing records; dated inventories showing continuous possession; testimony from an identifiable photographer supported by contemporary records; or other physical evidence capable of independently constraining when the roll was exposed. The SOM1-01 material presently described by its proponents does not supply that continuous history. Their FAQ itself characterises provenance as an issue and acknowledges that the original paper document is unavailable for paper-and-ink examination.[SOM1-01]specialoperationsmanual.comOpen source on specialoperationsmanual.com.
Ideally, investigators would also need the original negatives available for independent specialist examination rather than relying on enlargements or reproductions. Film identification could then be documented transparently: exact edge markings, emulsion and base characteristics, manufacturing-code interpretation, signs of age or storage damage, frame sequence and any physical discontinuities could all be recorded. Even a firm manufacturing result, however, would remain only one component of provenance.
Most importantly, discovery of the alleged paper original would change the evidential problem entirely. Paper, printing and ink could then be investigated directly rather than inferred from photographs. SOM1-01’s own authentication site recognises this point, saying that locating an original would permit dating of its ink and paper.[SOM1-01]specialoperationsmanual.comOpen source on specialoperationsmanual.com.
What the Tri-X claim can and cannot support
The reported 1954 film stock should therefore neither be dismissed as meaningless nor promoted into a date stamp for SOM1-01. If independently confirmed, genuine 1954-manufactured Tri-X would show that the surviving photographs were made on period film stock. That is a real physical observation and may be relevant when evaluating the history of the negatives.
Its evidential reach stops well short of authenticating the manual’s claimed date. Kodak’s technical literature distinguishes manufacture, storage, exposure and processing, and film-preservation practice treats manufacturing markings as dating aids that must be combined with other information.[FilmColors]filmcolors.orgFilm Colorse30.fmFilm Colorse30.fm A 1954 roll could have been exposed after 1954, while photographs made on it cannot directly establish the age of the paper and ink they depict.
The central authenticity question is consequently not whether old Tri-X existed, but whether there is independent evidence tying this film’s exposure and these photographed pages to the claimed historical period. On the publicly described provenance, that connection remains missing. The film may establish an earliest possible boundary for the photographic artefact; without custody records or the paper original, it cannot establish when SOM1-01 itself was created.
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Endnotes
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