The Martin C-1 was an archtop acoustic guitar with a solid Spruce top and Mahogany back and sides. This model featured a round sound hole from 1931 - 1933, while an F-hole model debuted in 1932 and became the standard appointment until production ended in 1942. 

The round hole specimens (of which only 449 were made) are slightly more valuable than the F-hole specimens (786 made). 

Gibon archtops are generally thought to be superior to the Martin archtops of this period. 

Years of Production: 1932 - 1942