1. 1850. 6 cuartos black. Mixed postmark of "A" fertilizer, in red from Burgos and Baeza *** / BURGOS. MAGNIFICENT AND UNIQUE PIECE. Cert. GRAUS. (fragment of letter included for comparison of the mark)
Online Stamp Auction Spain and Colonies #133
Thursday, 23 July 2026 | 15:00
Lot 3155
Starting price
475€
Price realised
550€
Technical editor of the description:
Diego Gutiérrez Carranza
dgutierrez@iberphil.com
Diego Gutiérrez Carranza
Junior philatelic technician of Spain and Colonies
dgutierrez@iberphil.com