envelopes registered to London bearing ½d., 1d., 2d., 2½d., 3d. Die I, 4d., 5d., 6d., 9d., 1/- (discoloured), 2/-, 5/-, 10/- and £1, each tied by Rabaul c.d.s., fine. Photo" /> cover 1917 (July) and 1918 (Apr.)<I> "Oswald Marsh"</I> envelopes registered to London bearing ½d., 1d., 2d., 2½d., 3d. Die I, 4d., 5d., 6d., 9d., 1/- (discoloured), 2/-, 5/-, 10/- and £1, each tied by Rabaul c.d.s., fine. Photo | Christie's