Stamps without perforations, with missing or incorrect color, missing or inverted writing on the reverse are all major errors. These, too, are collectible and have value, but they do not command the same attention as major errors. Major errors are extremely rare and exist in small numbers. All errors and freaks on duck stamps are very desirable and add a great deal of interest and value to a collection. How to collect duck stamps The first basic rule is to remember that stamp collecting is very personal.
Most collectors prefer to collect mint condition duck stamps.
Many others prefer collecting stamps on license, autographed stamps, plate blocks, stamps signed by hunters, art prints, souvenir cards, first day covers, or a combination. The bottom line, however, is to collect what interests you. Quality is a very important factor in a stamp collection. This applies not only to duck stamps, but all types. Preserving the mint condition of a stamp is crucial for determining value.