However, there are many postcards that were never mailed or that a part of the post mark is illegible or soiled.
Here are some general guidelines to help determine the age range of your post card.
Though the first documented photo postcard was mailed in 1899, the style wasn’t firmly established until Eastman Kodak began selling Velox photo paper with a pre-printed postcard back in 1902. 3A Folding Pocket camera, which used film specifically designed for postcard-size prints.
Most daguerreotypes were studio portraits, where the subject posed for the photograph at the photographer's studio.
Does the postcard back indicated that it was printed in Germany? The German cards were of exceptional quality and are some of the best examples of old postcards available. Does the postcard have a shiny finish on the front, with a color photographic image?
However, World War I shut down the German printing presses and cards started being printed in the United States or imported from Great Britain. Photochrome postcards have been produced from 1945 to present.
Does your card have the words "Private Mailing Card, Authorized by Act of Congress on May 19, 1898" on the back?
The words "Post Card" were not printed on postcards until December 24, 1901.