SCARCE RETURN INSTRUCTIONAL MARK; 10 Mar. 1924 env. to Tulagi (pencilled address erased) ex London franked KGV 1d + ½d with Tulagi arrival cds on rear and framed "BRITISH SOLOMON ISLANDS PROTECTORATE/'not known'/RETURN TO SENDER" h.s. on front. Sold in our June 1990 sale for £50 Cross Reference: OVERSEAS DESTINATIONS, INSTRUCTIONAL MARKS, RETURNED MAIL (Image)