Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Italian Occupation of Montenegro - 1942, red overprint ''Governatorato del Montenegro. Valore in Lire'' on Yugoslavian air post stamp of 10d brown red, broken ''G'' and ''t'' almost omitted in ''Governatorato'' (position 18 of 20-stamp setting), full OG, NH, F/VF, only 25 such errors possible, K. Ceremuga certificate, Sassone #PA23e, C.v. €2,400, Est. $400-$500