SIGMA GUITARS C.F.MARTIN|アコースティックベース|HARDOFFオフモール(オフモ)|2011310000101882,SIGMA GUITARS C.F.MARTIN|アコースティックベース|HARDOFFオフモール(オフモ)|2011310000101882,Sigma by CF Martin DM-4C Right-Handed 6-String Hollow-Body Acoustic Guitar,Mike Pender (The Searchers) - owned and used early 1980s Sigma Guitars for C.F. Martin DFC2EN electro-acoustic guitar, made in Korea, ser. no. 93024740,An Introduction to Sigma Guitars | guitarguitar