Information about reference source: Ma Tak Wo, Catalogue of Hong Kong Currency

The "Illustrated Catalogue of Hong Kong Currency" by Ma Tak Wo had eight editions between 1995 and 2013.

Ma Tak Wo has been a major player in the Asian numismatic scene for more than three decades, first as an avid collector of Chinese coins (including Hong Kong and Macau) and paper money, and then as one of the principals of the Taisei group of companies, which organized the highly successful Hong Kong and Singapore coin shows and auctions. In 1999, he set up the company bearing his name to take over the Hong Kong and Singapore Coin Auctions, as well as dealing in rare coins and banknotes of the world and publishing numismatic books. As a principal cataloguer and auctioneer of the two auctions, an enormous number of Asian numismatic rarities have changed hands under his hammer. The company also runs the biannual Hong Kong International Coin Convention & Antique Watch Fair.

During his busy career, Ma has managed to find time to publish numerous articles in numismatic journals and author or edit the following numismatic titles which have become standard references in their respective fields including:

- Currency of Macau (1987)
- Struck Copper Coins of Sinkiang (1988)
- Illustrated Catalogue of Sinkiang Gold & Silver Coins (1988)
- Illustrated Catalogue of Chinese Gold & Silver Coins-Ching & Republican Issues, 1st to 7th Edition (1993-2012)
- Illustrated Catalogue of Hong Kong Currency, 1st to 8th Edition (1995-2013)

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