cover 1883 (6 Jan.) registered envelope (a little ragged) to Paris bearing 3a. + 8a. tied by a fine strike of the "ADEN/B-22" duplex (K9.), showing adjacent boxed "REGISTERED/ADEN" d.s. (R2.) and "POSS.AN/PAQ FR. N NO 1" octagonal d.s., "R" in circle and French T.P.O. c.d.s. in red. Very scarce and appealing. Photo