Auction #96 Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World

POSTAL CHARGES PAID IN CASH: 1922 (March 29-August 17), five pre-printed registered covers (all are Dr. Brender's correspondences), sent from Smotrych, Kalush and Komarhorod (all are Podolia Gub.), Dubossary (Kherson Gub.) and Arkhangelsk, each one endorsed ''Postage collected'' with amount from 30rub to 400,000rub, each one folded vertically, still F/VF and interesting unit, showing postal rate changes during turbulent period of Soviet Russia, Est. $300-$400