Penny Black

The Mulready letter-sheet combined with a Penny Black stamp
First Piece of Mail Sent Using Penny Black Stamp Comes to Auction with $2.5m Estimate
Sotheby’s will offer a one-of-a-kind item linked to the history of modern mass communication: the earliest posted envelope using a prepaid stamp. 
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Book Dealer: Antiquarian & Rare
Bookshop on the Avenue
3
Lynchburg, VA 24501-6214
(434) 845-1336
Book Dealer: Antiquarian & Rare
Alcuin Books and Autographs LLC
4242 N. Scottsdale Road
Scottsdale, AZ 85251
(480) 946-1969
Book Dealer: Antiquarian & Rare
Gibson's Books
P. O. Box 633
NEW HOPE, AL 35760
(256) 725-2665
Bindery
Dragonfly Bindery/Studio
670 Park Avenue
Woonsocket, RI 02895
(401) 766-8786