The die variety section of the book is completely updated for the second edition, including many new doubled dies and RPMs and a revised analysis of the Lincoln cent OMMs. The pricing, description, die markers, and photographs were updated for most of the varieties. For each die variety listed, detailed macro photos make identification much easier. Most of the varieties include multiple photographs showing different details. Some varieties contain over 10 photographs. Included also for each variety is a detailed description of the variety, diagnostics, including die markers such as die cracks, scratches, clashes which can make identifying the variety easier, pricing, and cross references plus much, much more. John Wexler, Kevin Flyn. ISBN:. Pub Date: 10/4/2019. Edition: 2nd. Binding: Paperback. Size: 8.5 x 11. Pages: 442. Case: 16 .