Lot 30065 – 1913 Romanov Tercentenary 25k final die proof in blue & reddish brown

1913 Romanov Tercentenary 25k final die proof in blue & reddish brown, without the names of designer and engraver beneath the picture, small thin at top corner. Possibly from the Tsar collection R. Lowe 1935 as described “ 25 kopecks: … Thirteen bi-colored die proofs in various combinations of color…” published in the Yamschik-Post Rider 1983, No 12, page 14.