I did an EBay search on wood handle screwdrivers. i think Tobrin is the brand i was thinking of, but I do not think that was it on the one that looked like this one.
Pexto SolBar screwdrivers have two big rivets like on the handle on this one. It is not in my 1925 Pexto catalog, but I think that could be the brand based on the rivet similarity. Does anybody have any earlier Pexto catalogs?