Mortise & Tenon Neck Joint. The item "Martin D x1E Acoustic Electric Guitar" is in sale since Tuesday, January 19, 2021. This item is in the category "Musical Instruments\Guitars & Basses\Electro-Acoustic Guitars". The seller is "soundandvisionelgin" and is located in Elgin. This item can be shipped to all countries in Europe, United States, Canada.