Do you still have this instrument? I was looking for an example ever since Hank Levin told me about selling the Musical Traditions name to someone in Idaho. I don't think there can be very many of these. Does it have the "Musical Traditions" stamp on the tail?
Just spotted this. Definitely walnut: grain is right and it's by far the commonest wood used in the older 60s - 80s dulcimers. Looks like the original tuners too - lovely condition.
You'll see posts on Everything Dulcimer that suggest the MT dulcimers were made at the outset by a guy called Hank Levin who owned a shop in NYC. Not sure where it went from there or who ran the operation later.
It's such a lovely dulcimer!