Lot   Cat.#
60 **   151A-52A
1926, Esperanto Congress, 7k blue green and red, 14k blue green and violet, complete set of two, perforation 11 1/2, left sheet margin singles, 14k has tiny natural paper inclusion, full OG, NH, VF and very rare, these perforation varieties originated from miniature sheets of ten (2x5), P. Buchsbayew certificate, Scott #347-48 fn

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