Offered intermittently since 1939, the Jumbo J-100 has also been termed the SJ-100, the J-100 Custom and the Super Jumbo 100. This guitar is similar to the famous J-200 but does not share all the higher-end details and features. The J-100 Extra (or Xtra) was introduced in 1991 as a Mahogany bodied version of the J-100. It also featured different binding styling.