1968 Gibson RB-250 5-string banjo with FON of 533140. The following is from the listing at Folkway Music:
Serial # 533140. The RB-250 is Gibson’s most-popular post-war 5 string. Introduced in the mid 1950’s and still in production today, the RB-250 was Gibson’s least expensive Mastertone model, and featured the flat-head tone ring that made the company’s pre-war Mastertone models famous.
Mahogany neck with bound fingerboard and bow tie inlays, bound mahogany resonator with double ring inlays, flat-head tone ring, one piece flange, chrome hardware, geared tuners. New Presto tailpiece, replaced 5th string tuner knob, otherwise completely original, with the original tailpiece in the case pocket. Played but not abused, the RB-250 is in good condition. Its finish shows some buckle rash and plenty of craze-lines, frets are in good condition. Set-up in our shop, the instrument plays very well. Capo spikes added at frets 7, 8, and 10.
With non-original hardshell case