cover 1886 (4 Feb.) and (30 Sept.) envelopes per Trinidad to New York, bearing 2½d. and ½d. (3)+ 1d. respectively, both cancelled with Hamilton "1" K3 duplex; an attractive pair

细节
cover 1886 (4 Feb.) and (30 Sept.) envelopes per Trinidad to New York, bearing 2½d. and ½d. (3)+ 1d. respectively, both cancelled with Hamilton "1" K3 duplex; an attractive pair