Lot   Cat.#
687  4049 fn
1972, Opera Singer Leonid Sobinov, trial printing of recalled stamp 10k brown and buff with error of bottom inscription "CCCP", perforation L12 1/2 instead of comb 12 1/2x12, full OG, NH, VF and extremely rare, especially with full original gum, reportedly all examples with line perforation were removed from presentation cards and have no gum or were regummed, Scott #3966 var

Stamp Auction #76, February 03, 2018. Raritan Stamp, Inc