Bidspirit auction | Imperial Russia

Imperial Russia - UNUSUAL WAYS OF ACCEPTANCE AND DELIVERY OF CORRESPONDENCES: 1901-15, seven items neatly arranged and described on exhibition pages, each one representing different types of mail acceptance, such as ''Accepted by Wending Machine'', ''Accepted by Private Book'', ''Accepted by Private Agency'', two different forwarding markings and etc., some conveyance flaws possible on two items, still F/VF and rarely offered material, Est. $400-$500