Style 4 traces its roots back to the original Gibson banjo of 1918, which had no style number. The RB-4's walnut resonator, one-piece flange and flying eagle inlay all date back to 1929.

• Resonator and neck: Walnut
  
• Fingerboard/Inlay: Rosewood/Flying Eagle
  
• Binding: Multiple Antique, Double Ring Marquetry
  
• Hardware: Nickel Plate
  
• Tuners: Vintage 2-band
  
• Finish: Antique Walnut
  
• Case: Shaped Hardshell