G. F. Nesbitfc, Esq., has shown to the Postmaster General an embossed stamp for prepaid envelopes, which has been accepted, and the manufacture will at once proceed. Such, however, is the labor ...
The unique Mulready letter sheet combined with a Penny Black stamp features the first ever methods of pre-payments for post, introduced in May 1840. With an upper estimate of $2.5million (£ ...