China Republic; "Hong Kong Shanghai Banking Corporation", 1921, obverse and reverse uniface die proofs of BWC engraved, $10; obverse monocolour blue, fortress at left, rock at right, HSBC emblem centre, bank title above & HANKOW below, large size 22x14cm.; reverse in moncolour brown, HSBC building at centre, size 17x11.5cm, #PS336/SM Y13 for type. Both with notation for corrections and signed twice at lower right. Graded by PCGS. UNC/AU.(1) PCGS ChUNC63 / ChAU58 / Ex. Spink Hong Kong Auction 22 jan 2011 Lot 346 Sold for HK$12,000