Lot 50238 – 1913 Romanov Tercentenary 4k die proof in green with

1913 Romanov Tercentenary 4k die proof in green with double inverted print of 1k Peter the Great (one light, one albino), with the names of designer and engraver beneath the picture, very fine. Not listed in the Tsar collection sold R. Lowe in 1935 – Lot 16. Probably unique.