This scale test car has a yellow body with grey rails, underframe and couplers and runs on grey trucks. UP 03145 was built by Southwork Foundry in 1926. The scale test cars were always to be hauled just in front of the caboose. Immediately upon arrival at the terminal, they were set aside and subjected to a minimum of switching. Under no circumstances were they to be used in switching other cars in the train.
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