81. 1866. 4 blue cuartos . Interior Post Office of BARCELONA. BARCELONA linear postmark, in black luggage and on the front handwritten annotation "Urgent with a sack package". MAGNIFICENT AND EXTRAORDINARY RARE, PROBABLY THE ONLY KNOWN.
Online Stamp Auction Spain and Colonies #104
Tuesday, 4 November 2025 | 6:00
Lot 384
Starting price
1.400€