PC: Re: PC Color Guide

[BDXT30A@xxxxxxxxxxx ( JEROME A ROSENFELD)]

The "M" may have ment MTA if the MU's were silver and blue. The "M" 
Prefix stood for "MOTOR" (self-propelled car) as NYC RDC's used the M 
prefix on all RDC such as M-497, etc. Under MTA the "M" was dropped 
and just numbered 497, etc. No LIRR MU's ever carried the M on MP75 
cars which are similar to NYC 1100 series.

             Jerome