Unusual 1930s Harmony Viol

Here's an unusual "Harmony Viol" from the 1930s.

http://www.themusicemporium.com/prod...0ca-30s41.html

Here are some fine videos of Michael Daves playing a Harmony Viol with Brad Kline and others. Some nice playing and singing

http://www.mandolincafe.com/forum/sh...es-(new-video)