Bidspirit auction | Imperial Russia - Mail Acceptance

Imperial Russia - Mail Acceptance by Private Companies - 1901, violet straight line marking ''Prinyato po Chastn. Knige'' (Accepted by Private Book) on reverse of registered cover from Moscow to New Athon (Russian Levant) via Odessa, some facial cover faults, which is not so important for that truly exhibition piece, fine and rare, Sc. #50-51