India. (Used In Aden). 1880. Registered envelope addressed to Bombay bearing India SG 74, 8a pale rose and SG 93, 3a orange tied by 'B' in bars obliterator with Aden date stamp 'Aug 13' with framed 'Registered/Aden' and circular 'R' hand-stamp, sent on the steamer "Cathay" with Sea Post Office on reverse and Bombay arrival.