In 3 interesting albums from the archives of the Castres bank, 600 letters from the pre-philatelic era. Starting with n°3 "20c Noir", there are single stamps, pairs, strips, blocks of 4 on n°4, 10, 13,14,16,17,22,29,32, Bordeaux (including September 1871 postage), all to be studied for cancellation, rates...