A.D. Grover
Prototype offered by Grover with other contractors, to C.F. Martin as a prototype for the new banjo line they were considering.
Filed 10-1924
This one has no brand and no serial number.
Not unusual for a prototype
The closed back is in the fashion of the Van Eps Recording Banjos.

The tone ring and flange are one piece cast brass, with a nice wide head bearing.
Banjo was purchased less than 100 mi. from Nazareth PA, Home of C.F. Martin

22.5" scale
11" rim assembly, with recessed tension nuts (Like Weymann)
18 Fret Maple neck, with markers and side markers
Fresh Setup  CGDA on REMO Renaissance head

Grover Ideal Tailpiece
Grover 2 tab  geared tuners
Modern Gibson style Armrest (added)
OHSC in VGC, with 9-32"  tension wrench