Types of Stamps

Definitive stamps are the most common. Generally less than an inch square, they are printed in large quantities, and often more than once.

Commemorative stamps, larger and more colorful than definitives, are printed in smaller quantities and typically only once. They honor people, events, or subjects of importance life and culture.

Special stamps—Holiday Celebration, international rate, Priority Mail, and Express Mail. It usually are on sale for a limited time.

There are many types of stamps—for example,

• commemorative,
• definitive
  
• special
• formats such as sheets, booklets, or coils.

Stamps may be conventional adhesive ("lick-and-stick") or self-adhesive ("no-lick, peel-and-stick").