What is a real photo postcard?
Real photo postcards or RPPCs are actual photographs that have been developed on photographic paper. Typically they are the same size as postcards (3-1/2 x 5-1/2 inches).
How can you tell a real photo postcard from a printed postcard?
Look at the postcard with a magnifying glass. If you see little dots, it is a printed postcard and not a RPPC. If the image is solid, it is a RPPC.
How Can You Tell How Old a RPPC Is?
Many RPPCs have marks on the back which identify the manufacturer of the paper that the photograph is developed on. Look for a stampbox in the upper right hand corner. Often this is where such marks are printed. There are two good websites that have comprehensive guides to these marks: The Two Buds and Playle’s