Q:We have a collection of World War I postcards from Germany and Holland. Are they worth anything? I expect that some of the buildings shown were destroyed in the war or late during World War II.

A:A postcard can sell for anywhere from 5 cents to several hundred dollars. The price is determined by the type of picture on the card, the artist or manufacturer, condition, and rarity. Even the stamp or postmark can contribute to the value. Cards with pictures of street scenes with stores, advertising, people, or special events are very collectible. Collectors also look for pictures of early autos, trains, or airplanes. You can go to a postcard show and see what cards like yours are selling for. Dealers may be interested in buying your cards but will pay you a lot less than the retail value. They have to make a profit.