Back-Of-Book

Back-Of-Book: Stamps that are normally listed in the back of the catalogue after the regular stamp issues.

Are back-of-book stamps just the troublesome bric-a-brac of stamp collecting or are they an endearing and enduring puzzle for the curious collector?
Fortunately each of us gets to decide the answer to this question in our own way.

See also: Local, Stamp Collecting, Telegraph, Postage Due, Catalog