Auction #94 WORLDWIDE AIR POST STAMPS AND POSTAL HISTORY

1932, Postage stamps competition ''5-Year Plan in 4 Years'', group of not approved black-and-white photo essays containing 3 singles and a poster presented ten different stamps, artist Stepan Yarovoy, all mounted on page from a Collection, mostly VF and very rare, the first 5-Year Plan was adopted in 1928 and completed in 4 years and three months, Est. $1,500-$2,000