Soviet Union 1934, Dmitry Mendeleev, trial color proof of 5k in...

Soviet Union 1934, Dmitry Mendeleev, trial color proof of 5k in deep lilac, enlarged imperforated margins at the top and bottom, perforation 13¾ on sides only, printed on watermarked paper, full OG, hinged mostly on margin, VF and scarce

(via Philasearch.com - Soviet Union, Scott 536)

http://ift.tt/1OFt4Hu