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

Yvert 77 (Sc.80) 1909 20c. José M. Lanza with varieties: IMPERFORATE, CENTER INVERTED and TETE-BECHE pair franking a registered cover front with AR sent from La Paz to France on 27/MAR/1913, with arrival mark of Paris for 27/AP, excellent quality, extremely rare (it is almost impossible to find these varieties genuinely used!)