For collectors, dealers and players, this updated guide provides specifications, serial numbers, and more for determining the originality of vintage American acoustic and electric fretted instruments. Detailing thousands of models of major manufacturers, the book now includes expanded coverage of Martin, Guild, Mosrite, Dobro, Gibson banjos, Fender amps and Gibson amps, plus updates on the latest models from Fender, Gibson, Reickenbacker and others since 1990.