Coole, Arthur B., Encyclopedia of Chinese Coins (Volumes 2-7), Mission, 1967, a compendium of every illustration of knife, spade & related non-round coins and funeral monies in the available literature up to circa 1970 along with discussions of Seal script, but little numismatic information. A good one-stop source for the researcher, but most collectors will find a simple type/variety catalog more useful. Volume 6 on Ming knives is more comprehensive than any other reference; Volume 3 is useful for spotting odd variants of square-foot late spades and Volume 5 covers interesting "debatable" money items. This ambitious project died with Coole himself and Volume 7 covering pre-T'ang round coinages was completed later, covering about 1900 pieces. This set is missing the Bibliography Volume 1, set of 6 books, ex Dan Bloxsom Collection.
Estimate: 175- 225 USD