Martin Size 5 / Terz 12 Fret Models
Martin Size 5 was invented in the 1800s and is made to be tuned a third above concert pitch, like putting a capo on the fifth fret of a standard guitar. They are often used in recording sessions to provide high harmony, and have been used as the main guitar for legendary singers like Marty Robbins and Bobbie Gentry. They also make a wonderful first guitar for a little musician.
Sorry, Martin doesn't have any Size 5 Terz guitars available at this time.