Early Half Dollar Die Varieties: 1794–1836 is the definitive reference for identifying, attributing, and understanding America’s earliest half dollars. Originally developed by legendary researcher Al C. Overton and expanded through decades of research by Donald L. Parsley, this authoritative guide remains the standard reference for Flowing Hair, Draped Bust, and Capped Bust half dollars struck from 1794 through 1836.

Trusted by advanced collectors, dealers, and grading professionals, the book explains how to accurately identify individual die marriages using the universally recognized Overton numbering system (O-101, O-102, etc.). Hundreds of enlarged photographs and detailed diagnostics highlight subtle differences in dates, stars, lettering, and other design elements, making variety attribution accessible for both experienced specialists and dedicated newcomers.

The extensively updated fifth edition builds upon the classic fourth edition with expanded research, sharper photography, revised rarity ratings, updated condition census information, and enhanced die state analysis. Every known die marriage is cataloged with historical context, attribution diagnostics, rarity estimates, and supporting illustrations that simplify the identification process.

Whether you’re assembling a complete Overton set, researching a newly acquired coin, or deepening your knowledge of early U.S. silver coinage, Early Half Dollar Die Varieties: 1794–1836 is the indispensable reference that has defined the study of Bust half dollars for generations.