cover 1897 (5 July) XU5 (damaged) registered to Aden with embossed "THE PERIM COAL CO LIMITED/PERIM ISLAND" on flap, bearing 2½a. pair (stains) cancelled "B" in bars and showing Aden c.d.s. on reverse; 1901 (Mar.) 1a. on 1½a. postcard to Holland, cancelled by Aden c.d.s. and showing oval "THE PERIM COAL CO./PERIM ISLAND/LIMITED" cachet with manuscript date inserted.