#Regal Guitar Serial Numbers series

The current logo under AMI consists of a single word in block lettering 'Sigma' surmounted with the 'ОЈ' symbol (the Greek letter sigma). The early 70s models (1970вЂ“75) can be distinguished by a more squared peghead, shaped similarly to that of a 'spatula.' The original brand logo resembled the C.F. Sigma guitars made in Japan from 1970 through 1983. The 20 models showed a marked increase in quality, as it is thought Martin was prepping the company for sale. 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.

Д¬onstruction moved from Japan from 1970вЂ“1983, to Korea from 1984-1994, to Taiwan in 1994 (made in both Korea and Taiwan for the 1994 model year) and finally Indonesia (?вЂ“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.

#Regal Guitar Serial Numbers series

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.

7.2 Additional Models Approximately 1975 to 1978ДЄmerican company C.F.

5 Basic characteristics of Made in Japan Sigma Guitars.

distributor is now Six String Brokerage LLC, Nazareth, Pa.Д¬urrent range of Sigma instruments include acoustic and classical guitars, acoustic basses and ukuleles as 'Kindred Guitars' The sole current U.S. They are distributed and sold in the U.S. Louis Music of Missouri, AMI is not allowed to use the brand name 'Sigma' in the U.S. prior to selling the brand to AMI, and had since been picked up by St. rights to the Sigma brand name and trademark had been allowed to lapse by C.F. The rights to the name was acquired by German company AMI Musical Instruments GmbH, which relaunched the brand with guitars being produced in China.

The Sigma line was discontinued by Martin in 2007. Martin as a line of guitars at affordable prices to compete with the increasing number of imported guitars from Japan and elsewhere. Sigma Guitars is a guitar manufacturing brand originally released by C.F. Acoustic and classical guitars, acoustic basses, ukuleles