The Gibson RB-100 Model 5-String Resonator Banjo, crafted in Kalamazoo, Michigan, is a distinguished example of mid-20th-century banjo design. Sporting a striking sunburst lacquer finish, this banjo features a laminated maple resonator and rim that deliver both aesthetic appeal and functional resonance.
 
Produced during the 1950s and 60s, the RB-100 was positioned as Gibson’s midline banjo model, bridging the gap between the simpler openback folk banjos and the more elaborate Mastertone models. Although it boasts a full Mastertone-style resonator and flange, the RB-100 is outfitted with a plain brass tone ring, offering a powerful sound that’s more substantial than the typical openbacks of its era but slightly mellower than a full Mastertone setup. This makes it an ideal choice for players looking to delve into Bluegrass without the investment required for a high-end Mastertone.
 
The banjo’s aesthetic is classic Gibson, featuring an unbound dot-inlaid neck and a single-bound sunburst resonator that emphasizes its understated elegance. It retains the original 1950s-style peghead, which was later updated to the 1920s “Fiddle Head” design. The standard double co-ordinator rod system, along with geared pegs and a fully adjustable tailpiece, ensures reliable performance and easy playability.
 
With a scale length of 26 1/2 inches (673 mm) and a nut width of 1 3/16 inches (30 mm), the RB-100 is well-suited for both old-time picking and Bluegrass playing at more moderate volume levels. It offers a rounded, mellow tone that makes it a versatile instrument for various styles. This particular model is a very clean example of its kind, showcasing the fine craftsmanship and quality of vintage Gibson banjos. It includes the original head and bridge, maintaining its authentic sound and playability.
 
Overall dimensions are 37 1/2 inches in length (95.2 cm), with an 11-inch diameter head (27.9 cm) and a depth of 3 1/4 inches (8.3 cm) at the side of the rim. The Gibson RB-100 remains a superb choice for players seeking a classic, high-quality vintage banjo that delivers both style and substance.