Auction # 2506 WORLDWIDE + ARGENTINA: Special auction Punta del Este Exposition

Yvert 12a, 1866 20c. Llama diagonal BISECT used as 10c. on a cover sent from Arequipa to Lima on 17/NO/1876, a few days after the withdrawal of authorization to use bisected stamps due to the shortage of 10c. stamps (the authorization was made on 9/SE/1876 and it was withdrawn on 1/NO/1876). Excellent quality, very rare, ex-Herbert Moll.