Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2

Italy - Occupation of Montenegro - Air Post stamps

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Start price: $500

Buyer's premium:

1941, black overprint (type d) ”Montenegro. Crna Gora.17-1V-41-X1X” on Yugoslavian air post stamp of 5d lilac, top sheet margin single with perforation 12¾x12½, full OG, NH, VF and rare, Dr. G. Colla certificate, Sassone #A5/I var, C.v. €6,000, Est. $800-$1,000, Sc. # 2NC5 var