Union Pacific paint scheme era

Hello O scalers,

I'm collecting O scale items of the WP/UP 1978-1988 era.

I have Atlas 42' Union Pacific coil cars with the small UP shield (UP class G-110-90) and UP PS-4750 covered hopper with the centered small UP shield. I tried to find out if these cars will fit in my modeling era but without the big success till yet. On rrpicturearchives.net the cars are photographed on a much later date so this is not helpful. On the Intermountain website the UP covered hopper does have a remark that they were build in 12-80 with that paint scheme. Have enclosed the Atlas pictures of both cars.

It would be great if anybody could help.

Regards,

Martin