The DX420 Dreadnought is an acoustic guitar built by Martin. This built-in electronics instrument is manufactured in Mexico and is a Martin X Series model. Key features include an HPL Laminated Body, Rust Birch Laminate Neck, D-14 Fret Body Shape, Scalloped Spruce X-Brace, Fishman Sonitone Electronics and Prop 64 Graphic finish. The specs listed below pertain to the 2017 product year model pictured on this page. This DX420 was a limited run built to commemorate California's passing of Prop 64 legalizing the use of marijuana. The graphic used for the top of the DX420 was an illustration done by artist Robert Goetzl.