Lot 143 BRITISH GUIANA

1881 2 on 24c emerald-green OFFICIAL left marginal mint block of four showing type 24 surcharge (R8/1) and three other stamps showing type 23 surcharge. Top two stamps showing the two different types setenant heavily mounted mint with rust spots coming through from the gum side additional gum bend. A scarce a positional block showing both varieties setenant, SG 157a & 156 x 2. Very rare.