1929年香港上海汇丰银行1元单面黑白单色试印票,缺钞票编号,于PMG封套,不可多得. Hong Kong & Shanghai Banking Corporation, a black and white proof for the $1, 1 January 1929, no serial numbers, uniface, signature Hynes, printed by Bradbury Wilkinson,(Pick 172b), in PMG holder. A scarce proof for an early Hong Kong $1