cover 1879 (11 Sep.) XU5 to London, bearing 1d. lilac block of four (lower left stamp with small tear at foot) with "AO7" cancellations, showing fine "DOMINICA/1/PAID/SP 11/79" (RL Type I, PS 4) and "LONDON W.C./B/SP 29/79/PAID" c.d.s., both in red, crest of Jas. Carraway & Co., Merchants, Dominica, on the flap; filing creases well clear of the adhesives. Rare. B.P.A. Certificate (1985). S.G.5. Photo in colour