Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2

British Commonwealth - Batum (British Occupation)

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Start price: $150

Buyer's premium:

1919, postal stationery card with black surcharge ”BATUM. OB. KOP.35 KOP.” on 4k red, minor foxing, otherwise unused, VF and rare, according to Ashford only 46 such cards were produced (most Batum stationery cards have surcharge 35k on 3k), Est. $250-$300