backstamps
/ˈbækˌstæmps/
noun
- Marks or stamps placed on the back of an object (such as a book, document, or piece of pottery) to show information like the maker, date, or origin.
- The backstamps on these library books show they were acquired in the 1950s.
- She examined the backstamps on the antique plates to verify their authenticity.
- Collectors often look for backstamps on old china to determine its age and manufacturer.