Lot 40308 – 1913 Romanov Tercentenary 25k photographic essay with engraver markings in red pen

1913 Romanov Tercentenary 25k photographic essay with engraver markings in red pen which look like they are highlighting changes which were made for the final design (cross above crown, dot under corner ornaments and wider « 5 »), without the names of designer and engraver beneath the picture, very fine. Exceedingly rare, not mentioned in the Yamschik-Post Rider 1983, No 12 & 13