All these factors come together at about the turn-of-the 20th century.
The mere fact that photographic prints were done with post card backs for mailing hekps to date the images.Basically the postcard formats dates the images to the 1900s-30s, although a few types continue into the late 20th century.The basic dates of the early 20th century result from several factors: 1)the popularity of commercial post cards because of improvements in printing, 2) postal regulations and inexpensive sta,p rates, and 3) advances in amateur photography.* British and Canadian cards ** Incomplete chronological assessment # Some sources say 1926.Available images suggest that the 1923 date may be more accurate.
K: Known dates, the year spread could be larger Dating photopostcards is an art, but is somewhat easier than dating studio portraits as the date of studio operatioins is often not known.
Most of the photo postcards that we have noted date from 1907.
There are some photo postcards that appeared a few years earlier. The companies involved and the printing details can be used to date these postcards, even when they were not postally used.
These indentifying marks on the back are normally found stampbox corner.
They identify the manufacturer of the photographic paper.
You can approximate the age of the Real Photo by knowing when the paper manufacturer was in business.