1. 1850. 6 cuartos black (I-13). Pre-philatelic postmark "1 R", in Bilbao red. MAGNIFICENT AND VERY RARE. Cert. GRAUS (pre-philatelic letter is attached for comparison of the brand).
Online Stamp Auction Spain and Colonies #114
Thursday, 9 May 2024 | 15:00
Lot 63
Starting price
275€