Bidspirit auction | Imperial Russia

Imperial Russia - 1913, Romanov Dynasty, Alexander III, two imperforated stage proofs of central vignette for stamp of 3k in rose red, first one with unfinished design (unclear oval), printed on thickened chalk-surfaced paper without gum, sizes 27x42mm and 26x32mm,the last one with marginal thin, both are hinged, VF and scarce couple, Est. $500-$600, Sc. # 90