Lot 30097 – 1913 Romanov Tercentenary 70k frame only die proofs in emerald, dark blue and violet

1913 Romanov Tercentenary 70k frame only die proofs in emerald, dark blue and violet, with the names of designer and engraver beneath the picture, one with slight thins at top otherwise very fine. Possibly from Tsar collection sold by R. Lowe in 1935 described as « 70 kopecks: … Forty-six die proofs of the frame in different shades… » published in the Yamschik-Post Rider 1983, No 12, page 15.