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In 1939, Martin and his family moved to Nazareth, PA. They produced guitars just outside of town making more straight forward designs, rather than the European that Martin learned. Martin & Company was introduced and lines were expanded.In 1852, Martin standardized his body sizes with 0, 1, 2, 3, etc. In 1896 the first Martin mandolins began being produced.History Initial construction was in Japan by various manufacturers/factories from 1970 through 1983.The first Sigmas were typically dreadnought acoustics, although Grand Concert Series (GCS) and classical models were also produced from the early 1970s (1971) onward. Early models have a zero fret and capital letters SIGMA logo on the peghead with a Greek Σ (capital sigma). I just picked up a very early rare old Sigma DR-7 guitar. It has the "ZERO" fret also making this one of the First ever made SIGMAS. These guitars if you are lucky enough to find one compete with any Vintage Martin from that era. Where Dealers charge a fortune for Guitars of this quality. It certainly didn't compare to my solid sitka topped Yamahas that I bought for that price.
It sounds great and I would like to know the exact date of production. Dieter THI GUITAR IS LIKE NEW THIS GUITAR WAS BOUGHT BY BILLY CRASH CRADDOCK.
Construction moved from Japan (1970–83), to Korea (1984-93/94), and finally Taiwan (1993–2007).
In 1980, model designations were added to capitalize on Martin model numbers: the DM-18, DM-19, DR-28, DR-28H, DR-35, DR-41, and DR-45.
The DM-5 and DR-7, as well as other early models continued to be built during this time as well.
Headstock Logos Sigma guitars made in Japan from 1970 through 1983.
Hey all, first time posting here as I am primarily an electric guitar player who stumbled onto the beauty of acoustic guitar I was just wondering if any of you can answer this question?