Vintage photo postcard dating
Some famous sports photographers sold real photo postcards.
This includes George Burke (the photographer for the Goudey and Play Ball sets), Carl Horner (the photographer for many early 1900s cards including the T206 Honus Wagner) and legendary boxing photographer Charles Dana.
However, real photo postcards can be found with a wide range of subjects, including other sports, movie stars, politicians, nature and animals.
If it exists, it is more noticeable at the edges and in the dark areas of the image, and when viewed at a specific angle to the light.They were designed and printed on the backs to be mailed, often having handwritten letters, addresses and postage stamps on the back.