Whazzit?
This is clearly not a dulcimer but an odd duck, nonetheless. It took me a while to find the tuners: interesting idea! Anybody seen anything like this?
http://www.ebay.com/itm/Old-Antique-Dulcimer-Zither-Primitive-Folk-Art-Instrument-/161325140906?pt=LH_DefaultDomain_0&hash=item258fba4baa