Mystery Gerald Titus dulcimer 1967, odd fine-tuners
Instruments- discuss specific features, luthiers, instrument problems & questions
A number of builders use(d) bead type fine tuners, but I've never seen them so tall! I would think they would get in the way of your strumming hand!
Sorry, I've never heard of builder Titus either. Others to query would be Robert Force and Neal Hellman, both of The Pacific Rim Project days. Bonnie Carol is another of that crew, and a builder herself, who may also shed some light.
Like Lisa, I wonder at that slot... thinking that the bridge has been moved forward whether due to a miscalculation of the correct location (and the mis-cut slot never filled in) or something else. You might want to query Joanna about that...