S.D. Curlee 1975-1982 S.D. Curlee was founded by Randy Curlee around 1975 in Matteson, Illinois.  S.D Curlee came from the three original designers, Sonny Storbeck, Randy Dritz and Randy Curlee. According to Michael Wright (Guitar Stories), this independent entrepreneur built and sold around 15,000 handcrafted instruments, including 12,000 bass guitars, between 1975 and 1982. [Source: Wikipedia]

According to the ebay article with these pics from this particular model is made in Japan.