1996 RMC Real McCoy Custom MFOB (Modified Frequency Overdrive Box / Monkeys Fly Out Butt) two-stage overdrive unit by Geoffrey R. Teese. Serial no. 10 (MFOB96000010). As used by Rich Robinson of The Black Crowes and Page Hamilton of Helmet. One pot may have been replaced as the shaft is taller than the other two (see pics).