Used Z MICRO-TRAINS LINE ATSF MTL 4-Pack Car Passenger MPN # 99401150
This was known as shadow striping and remained on the cars well into the 1950s. 60 via priority mail in the USA.
Surprise Valley, Sweet Water Valley, 3071, 3918 Z scale (not n scale)
In the late 1930s Santa Fe passenger cars began to modernize with the introduction of the fluted side buddy passenger cars.