The sheet highlights the Russia section of the sale, and is currently selling at $140,000.
A sheet of four on thick card, it bears the two line overprint "Lutchemu Udarniku", which translates as "To the best shock worker - All Russia Philatelic Society". It is in unused condition, without gum as issued, and has "perfect sharp corners".
The sheet does bear almost imperceptible toning, as is usual on this issue, with slight shading at the bottom. In very fine condition, it is one of the best examples of the 25 known copies in existence, according to Cherrystone.
The sheet will be accompanied by a 2003 Mandrovski certificate.
As Russia's middle-class continues to grow, more and more collectors are joining the stamp collecting hobby and the market is now stronger than ever. At Cherrystone's July sale, a block of four 18k stamps from the 1925 definitive issue sold for $28,000 to lead the auction.