Guide to the strongest and most valuable double die Jefferson nickles. All varieties are illustrated with photos of the doubling and key die markers as well as information on the values of the varieties. John Wexler & Brian Ribar. ISBN: 0967965519. Pub Date: 1/1/2002. Edition: 2nd. Binding: Paperback. Size: 8.5x11. Pages: 264. Case: 22 .