1913 Romanov Tercentenary 3k carmine on buff card, with the names of designer and engraver beneath the picture, pencil « 22 » on reverse. Possibly from Tsar collection sold at R. Lowe auction in 1935 – Lot 16 described as “ 3 kopeks, Die B:…. Five die proofs of the complete stamp in carmine on buff”, published in the Yamschik-Postal Rider 1983, No 12, page 13.