Samoa, 1914, 2½d on 20pf ultramarine, fraction bar omitted. In combination with 1914, 1d carmine + 2½d blue on 1916 registered cover to Switzerland, tied by Apia cds's, box registry handstamp and light censor handstamps, with Canada and London transit backstamps, Very Fine. Scott No. 104a  Estimate $400 - 500. $0 (Image)