You did a beautiful job on this Karl! If I were guessing, I would say it was some kind of Mahogany, such as Sepele. The deep grain is what makes me think so. There are many kinds of Mahogany though and it is hard to tell.
I love spray shellac for a finish. It give a lustre without too much of a shine and it does protect your wood. It has been my favorite finish for fretwork lately. You can apply several coats in an evening, allowing just a bit of time to dry between them.
This was really a pleasure to see!

Sheila