On Oct 21, 2013, at 5:17 PM, O Fenton Wells <srrfan1401@...> wrote:

 

So Gentlemen, based on backdating the GATX to an early 1950's what will everyone use for the white stripes above and below the reporting marks ( assuming they were there on the prototype)?  Would love to match the paint on the car.  Any suggestions?

Fenton, take another look at my post on this subject.  The lines disappeared in 1945.  By the early '50s many, if not most, GATX cars had been repainted without them.  All that's necessary is to backdate the smaller lettering on Tangent's ca. 1958 model, and that's quite easy. 
Richard Hendrickson