Stampless 'Meter' cover with manuscript 'Abs. Horst Steinert, MS "Gemstone" 2 Zt. Aden' return address on reverse (showing the cover being sent from a German ship) with fine strike of large illustrated POSTAGE REVENUE ADEN 1.50 SH/CTS U4 'Dhow' meter mark in red dated 12 XII 61. Addressed to GERMANY.