Gibraltar Used In Great Britain. (Hong Kong). 1871. Envelope addressed to Hong Kong, China bearing Great Britain SG 117, 1s green tied by A/26 numeral with adjacent Gibraltar date stamp 'No 22' routed on the 'S.S. Pera' via Alexandria and the 'S.S. Pekin' to Singapore with 'Hong Kong/ Marine Sorter/ Singapore to Hong Kong' on reverse '7th Jan 72' . Lovely item of incoming mail to Hong Kong from Gibraltar.