1. A mark, stamp, or impression made on the back of an object, especially on pottery, porcelain, or other collectibles to indicate maker, date, or origin.
Usage: Common in antiques and ceramics collecting

1. To apply a stamp or mark to the back of an object.

Examples

• The collector examined the backstamp on the porcelain plate to verify its authenticity.
• Many 19th-century manufacturers would backstamp their pieces with the factory name.
• She carefully backstamped each ceramic item with the artist's initials.
• The backstamp revealed that the vase was produced in Staffordshire.
• Dealers often use the backstamp to date and value antique dishes.
• He learned to backstamp his pottery with a custom seal.