It has the resonator with three concentric circles.
It is supposed to be a TB250 but I have not found any serial. Maybe the pot is replaced. But I donīt mind itīs the sound that counts. The name Bowtie comes from the peghead and the inlays on the fretboard.
On Inside it has the Mastertone tonering with holes on the inside. It has only one coordinator rod. That was common on the Gibsons during the 60:es. So my guess is that this banjo was built in the late 50:ies or mid 60:ies
So Now I have two banjos from the 50-60:ies one from year 2002 and three from the 20:es.
Oettinger style 4 finger tailpiece
Materstone on the fretboard. And the bowtie inlay.
And Kluson tuners. Very clewer ones. The are reversed on the C and G strings side so you always turns them the same direction.