Baku Provisional Handstamped Overprints 1922, violet overprint (31mm) "Bakinskogo G.P.T.O. No.1" (Baku City Post and Telegraph Office No.1) on Soviet issue, complete set of ten, full OG or no gum as issued, one stamp is postally used, VF, handstamped guarantees on reverse, Mi C.v. ?1,050
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