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The key is silvering is an aging process and appears after decades.
The presence of silvering is strong evidence of a real photo postcards old age.
* * If the front and back has a multi-color dot pattern under strong magnification, as on a modern baseball card, it’s more than probably modern reprint, likely made on someone’s home computer.
Reprinted by Beijing’s Three Shadows Art Center, his guides “Judging the Authenticity of Prints by the Masters” and “Judging the Authenticity of Photographs” were the first comprehensive books on the subjects published in China.
lthough real photo postcards were made in a variety of ways, they hold one identifiable feature in common.
Earlier cards were called ‘Private Mailing Cards.’ Only the address was allowed to be written on the back of the card during Post Card Era. Divided Back Era ( ) Postcards with a divided back began March 1 1907.
The address was to be written on the right side and the left side was for writing messages. The early images were ‘full bleed,’ meaning that they went all the way to the edge of the card.
Silvering is when it appears as if the silver has come to surface of the image.