Production of the Martin D-25K began in 1980 and ended in 1989. The D–25K had a spruce top, two–piece koa back and sides, rosewood fretboard and bridge, and black binding; there was also a D-25K2 version with a solid Koa top. This was not the first time the Martin Company used this Hawaiian hardwood, from around 1917 Martin made ukuleles and small bodied guitars from Koa, but these were the first Martin Dreadnoughts to using koa.