Lot   Cat.#
57  104-05
1925, Aleksandr Popov, five imperforated proofs, including three of 7k in blue, greenish blue and red; two of 20k in olive brown and red brown, printed on thick paper with text on reverse, no gum as issued, NH, VF, proofs of7k signed by Z. Mikulski, Scott #328-29

Stamp Auction #77, March 02, 2018. Raritan Stamp, Inc