Postcard photo of Marilyn Monroe. The photo is from her pre-stardom days when she did shoots for calendar photos, etc.
Datum
Not mailed. The publisher's address has a Boston zone number, not a Zip Code. Zip Codes started being used circa 1963. These chrome postcard started replacing the older style linen ones in popularity starting in the late 1940s. Monroe began modeling circa late 1940s, doing various things like calendar photos. The photo was taken before she became a major star.
The card has no copyright marks on it as can be seen at the links.
United States Copyright Office page 2 "Visually Perceptible Copies The notice for visually perceptible copies should contain all three elements described below. They should appear together or in close proximity on the copies.
2 The year of first publication. If the work is a derivative work or a compilation incorporating previously published material, the year date of first publication of the derivative work or compilation is sufficient. Examples of derivative works are translations or dramatizations; an example of a compilation is an anthology. The year may be omitted when a pictorial, graphic, or sculptural work, with accompanying textual matter, if any, is reproduced in or on greeting cards, postcards, stationery, jewelry, dolls, toys, or useful articles.
Delo je v javni domeni, saj je bilo brez oznake avtorskega dela prvič objavljeno v Združenih državah Amerike med letoma 1929 in 1977. Razen če je od avtorjeve smrti preteklo že več let, je to delo v jurisdikcijah, ki za ameriška dela ne upoštevajo pravila krajšega trajanja, avtorsko varovano; npr. v Kanadi (50 let p. s. a.), celinski Kitajski (50 let p. s. a.; ne velja za Hong Kong in Makav), Nemčiji (70 let p. s. a.), Mehiki (100 let p. s. a.), Švici (70 let p. s. a.) in drugih državah z individualnimi pogodbami. Podrobnejša razlaga je dostopna na tej strani (v angleščini).
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Uporaba datoteke
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Datoteka vsebuje še druge podatke, ki jih je verjetno dodal za njeno ustvaritev oziroma digitalizacijo uporabljeni fotografski aparat ali optični bralnik. Če je bila datoteka pozneje spremenjena, podatki sprememb morda ne izražajo popolnoma.