RB-3 Wreath
For banjoists of the 1920s and '30s, the RB-3 was their step up to a Gibson Mastertone. The warm tone of a mahogany resonator has been the RB-3's trademark since 1930.
http://www2.gibson.com/Products/Acoustic-Instruments/Banjo/Gibson-Original/RB-3-Wreath.aspx