The Taiwan Sigma guitars have a miniature version of the'C.F. Those tuners indicate it may have been a very late Korean model. Production of Sigma's was moved to Taiwan in either'93 or'94. Additional info provided by another buyer that might be useful: If it's Korean it's older than ten years. Seller added the following information: This guitar was manufactured in Korea and is believed to be atleast 10 years old. Please feel free to e-mail with any questions and check out my other auctions.

Great action and with crystal clear highs and deep sounding bassy lows, its a thrill to play.

Rosewood bridge and new set of Martin strings. This guitar is in almost perfect condition with rosewood fretboard and pearl inlays. Martin Sigma Acoustic Guitar GCS-1 serial#96010018. I ship within 1 business day of cleared pay pal paym Please see my video for a more detailed description and demo. The low easy action is at a respectful 3/32' at the 12th with true harmonics and proper intonation. The now cured& aged spruce top has mellowed into a soft& mellow golden hue. Oh, and by the way, this instrument looks, sounds and plays beautifully with ringing high tones, great mid range and a sustain on par with it's big brother, the Martin D-18. Because the guitar sat in its case for 33 summers& winters, there is a dulling of the finish on a small portion of the backside of the neck where it contacted the small rubber neck rest at the accessory box top(the neck rest was decomposed when I bought it) This guitar even has it's OSC(I removed the rubber neck holder and cleaned the interior of the case) hang tags from the showroom floor. It has a book matched solid Sitka spruce top, high gloss buckle rash and scratch free mahogany back& sides, rosewood bridge and totally pristine fretboard. This guitar is nearly devoid of scratches, nicks, bumps and other things associated with use, handling& age because of it's sheltered life.

I cleaned it up, restrung it, adjusted the action a smidgin& Bob's your uncle. There is where it sat for 33 years until I bought from the person who bought it from the original owner. This was purchased new right around then and the owner took a few lessons, decided that it wasn't for them and put it back in it's case. This particular guitar is a DM-4 and was made in Korea around 1980. Each guitar was sent back to the Martin plant in PA and if it did not pass the rigorous inspection, it did not sell as a Sigma. for those in the American market that wanted Martin quality but at an import price. These were designed, licensed, backed, inspected and marketed by Martin& Co. Mahogany back& sides dread naught acoustic. Here is a nearly flawless circa 1980 Sigma by Martin acoustic DM-4 solid sitka spruce book matched top.

Sigma guitars serial numbers