And if the GCS-4 was made 1975-1978, then why does everything else suggest 1980-1984? (Then again, I found something else online that stated the GCS-4 was produced starting in 1996.) However, the logo is definitely the 2nd-gen logo (there is no Greek sigma letter on it). Except this little bit on Wikipedia (I know, not the greatest source, but beggars can't be choosers when there isn't much out there it seems like most people have the DR or DM line, or the GCS-6 or GCS-7), listed under "Additional Models Approximately 1975 to 1978" which also states that "These guitars still had the early peghead logo, instead of the "Second Generation Sigma" Martin style logo that started in 1979.": I also don't see a visible way to adjust the truss rod which seems to also suggest post-1980.Įverything suggests the instrument was made between 19. There is no paper label on the inside, which also suggests 1980-1984 (it seems the labels reappeared in '84). 1970" which suggests it was made after 1979. It's a GCS-4 (or as the stamp inside says, "GC-S4"). This particular model seems to be difficult to find information on.
I see there's not a whole lot here on Sigmas short of the occasional mention, but I thought I'd ask here first to see if anyone has info on this model, since I'm already registered here. The 20 models showed a marked increase in quality, as it is thought Martin was prepping the company for sale.I just picked one of these up as my first guitar (chose it over a new student-grade Yamaha, in part because the smaller body size fits me better), and now I'm trying to learn more about it. The "First Generation" DM-5 and DR-7 (laminate wood bodies and tops,) as well as other early models (e.g., the GCS-7/CS-7) remained in production during this time as well. They are called 'Second Generation' Sigma's by C.F. In 1978, 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. Ĭonstruction moved from Japan from 1970 to 1983, to Korea from 1984 to 1994, to Taiwan in 1994 (made in both Korea and Taiwan for the 1994 model year) and finally Indonesia (?–2007). Though other models were produced the most common two throughout the '70's were the Dreadnought models DM-5 (DM12-5) and DR-7 (DR12-7.) D for dreadnought, R for rosewood, M for mahogany and the number denoting the grade of wood, 5, 7, 9, 11, 15. The first Sigmas were typically dreadnought acoustic, although Grand Concert Series (GCS) and classical models were also produced from the early 1970s (1971?) onward. Sigma released a wide series of acoustic and classical guitars, which initial construction was in Japan by various manufacturers/factories from 1970 through 1983. Martin created the brand "Sigma" in order to compete with cheaper guitars that were imported from Asia.
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