1927, 14k yellow green and brown, perforation 10, top margin single, full OG, NH, VF (Image)

1927, 14k yellow green and brown, enlarged margins imperforated single, full OG, NH, VF, tiny dealer's hs on reverse, C.v. $950 as hinged (Image)

1927, 14k yellow green and brown, bottom sheet margin imperforated single with two portraits of Dr. Zamenhof inverted and placed at left, vertical invalidating perforation, tiny marginal only natural inclusion, full OG, LH, VF (Image)

1927, 14k yellow green and brown, vertical pair with perforation 10 3/4x10 1/2, imperforated between stamps, diagonal line through the design of both stamps as printing plate defect, full OG, LH, VF and rare, P. Buchsbayew certificate, ex-the Matvil Collection, C.v. $8,250 (Image)