"THE PRACTICAL BOOK OF COBS: Second Edition - History, Identification, Shipwrecks, Values, Market, Coin Photos" - signed by Frank Sedwick on the Title Page. 1990 reprint/revised edition of the original 1987 printing. Paperback guide in very poor condition. SEE PHOTOS. Age, marks and use wear, but completely intact with all pages. 

"The Practical Book of Cobs is a reference book on Spanish colonial coins by Daniel Sedwick and Frank Sedwick. First published in 1987, An essential guide and reference work for divers and shipwreck enthusiasts, this book offers information that is not readily available or only available after searching many reference works or auction catalogs. This book covers the mints, assayers, styles, and types of “treasure coins” from the period 1536 at the Mexico City Mint until 1773, the end of cob-type coins minted at the Potosí Mint in Bolivia. In addition it has a section that goes over each of the most famous treasure wrecks of all time including the Atocha, the Spanish 1715 Fleet and many others..."