Knutsen Dyer-style harp guitar built by Alejandro Vasquez Rubio. The design of this "one-arm harp guitar" was patented in 1897 by Chris Knutsen, who was contracted to build guitars for W.J. Dyer & Bro in 1899. However Dyer switched to the services of the Larson Brothers in 1902, allegedly because their guitars were more consistent whereas Knutsens were all one-offs and could vary considerably from one example to the next.
G L Wilson
Guitarz - The Original Guitar Blog - now in its 9th year!