cover -- a fine example (No. 581) used with Marshall Islands (5mm. setting) 2d. on 10pf. and 2d. on 20pf., all tied by "RABAUL/NEW BRITAIN" oval d.s. in violet on 1915 (4 Jan.) locally addressed envelope; the envelope a little ragged at top caused through opening. Most attractive. B.P.A. Certificate (1967). Photo