Marble Collectors Handbook Author:Robert S. Block Over 580 beautiful color photos display a stunning array of contemporary handmade and design marbles by a variety of talented artists, along with handmade, and machine-made examples. Swirl, Clambroth, Banded Opaque, Indian, Lutz, End of Day, and Single-gather handmade marble designs are featured, along with machine-made examples by M.F. Christen... more »sen & Son, Christensen Agate, Akro Agate, Peltier, Master Marble, Marble King, Ravenswood, and Vitro Agate. Also included are original marble packaging, games, and tournament pins. The useful text provides essential information on marble valuation, definitions of marble conditions from mint to collectible, tables with pricing for a wide variety of marbles by size, form, and condition, and current values in the captions. This book is essential for every marble fan!« less