Number 90 posted:On Santa Fe passenger diesels, there were some changes in minor details of paint over their service life.
The 47L-A-B-C was delivered in 1952. At that time, the C unit (the rear cab unit) would only have been identified by a small letter C below the nose emblem, and by the small 47C painted in black in the red stripe, at the rear end of the locomotive. The 47L (the front cab unit) would have had a letter L beneath the nose emblem, and the small number 47 painted at the rear corners. Both cab units would have had only 47 (with no letter L) in the number boxes because they were kept coupled as a consist. In the mid-1950's, Santa Fe began to add the C suffix to C-units' number boards.
Check the small black number at the rear to see if they are the same or different units.
Okay, finally had a chance to examine the locomotives more closely. The Santa Fe 47L does indeed have the L to the rear of the red stripe, and an L on the nose. The 47C however, although it does have a C to the rear of the red stripe, it has the same L on the nose as it's sister unit. I assume the L may be the designation used for the whole consist? The B units are numbered completely different. I have 336 B and a 307 B.
