The "33" Prison Guitar. This guitar was built by William's grandfather while in prison from 1960-1962 at the Michigan State Penitentiary. : r/BillyStrings
Karera STC-33 1997 White on black | Reverb
DISC Vox SSC-33 Solid Body Single Cutaway Guitar, Gold Top | Gear4music
The Big Review: The Rapier 33 breathes new life into a cult classic