Rarity. As with all antique items, rarity brings up the value of postcards. If only a few of the cards were printed or only a small number have survived the ages, your card may be very valuable. However, rarity goes hand-in-hand with other characteristics; if only a single card was printed, that makes it rare.

Why are real photo postcards valuable to collectors?

Many of these postcards are rare, one of a kind items and historical documents. Collectors should look at real photo postcards carefully. Details such the toy a child is holding, a car, or a building in the background can make these cards particularly interesting and valuable to certain collectors.