1957 Gibson RB-250 AT Mastertone1957 Neck and Headstock Gibson RB 250 Archtop banjo Mastertone Tone ring Serial # 7 7022 115 dates to 1961 New bridge From a desirable period for bow ties, since it has a 1 piece flange and the older style thick ~3 ply rim. Shortly after this banjo was built, the less desirable thin rims and multi ply rims start to appear. Rosewood fingerboard Features: Construction: Made with a mahogany neck and resonator. Features a rosewood fingerboard with pearl