Cameroons, 1915, "C.E.F." and ½d on German Cameroun 5pf green, left margin strip of three, in combination with 1915, 1915, "C.E.F." and 1d on German Cameroun 10pf + "C.E.F." and 2d on German Cameroun 20pf on registered cover to Berne, Switzerland, all tied by Victoria, 15 Feb 19 cds's, registry etiquette and transit backstamps, Very Fine. SG No. B2-B4  Estimate $200 - 300. $0 (Image)