Dating kodak photo paper

At least 450 different real photo postcard backs can be found but as of this time there is a lack of accurate information regarding all their dates of use, or they were used in very limited quantities.Kodak controlled 80% of the paper market with their brands Artura, Azo, Aristo, EKC. Cyko by Ansco, Argo by Defender, and Kruxo by Kilborn comprised most of the remaining market.Observing this shiny crust, no mater what the color, is a quick and sure way of telling if you are looking at a real photo.A common problem with real photo postcards is that they are often devoid of any descriptive text.

While today this would lead to lawsuits, copyright was uncommon and rarely enforced at the turn of the 20th century.Most old photo papers used silver in their emulsions.As time passes this silver tends to migrate to the surface of the print creating tell-tale metallic patches.Collotypes, which provide the finest detail of all printing methods are sometimes confused with real photo postcards.But even collotypes will exhibit a discernible grain when magnified.

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