★★ 57hh. 1937. 1 ct green. DOUBLE OVERLOAD, in black and red. MAGNIFICENT AND EXTREMELY RARE, MENTIONED IN THE REGUANT CATALOGUE AS A COLOR TRIAL AND HIGHLIGHTING ITS RARITY.
Online Stamp Auction Spain and Colonies #133
Thursday, 23 July 2026 | 15:00
Lot 4382
Starting price
50€
Price realised
55€
Technical editor of the description:
Hermenegildo Trillo Barragán
htrillo@iberphil.com
Hermenegildo Trillo Barragán
Philatelic technician of Spain, Colonies and Worldwide
htrillo@iberphil.com