Technical Bus or panel truck seat ID

I picked up this old seat yesterday and am looking for a matching one. The guy I bought it from said it was the drivers seat from an old bus. Anyone able to tell me more as to what it actually is? I've seen similar ones on ebay from 50s panel trucks or equipment. Otherwise I may need to just use it as a pattern and fab a matching one.
The seat is 19" wide and the back is 24" tall.

It'll be going in this.

 

Looks like it came from a superior bodied bus


Sent from my iPhone using The H.A.M.B. mobile app

 

Ok. Thanks. That does look the same. What year roughly?

 

Mid 50s superior bodied school buses the one pictured came out of a 53 ford f600


Sent from my iPhone using The H.A.M.B. mobile app

 

OK. Good to know. Car was built in 1953-1954 so that's the right era.

 

Making progress on them. They should be finished in a couple weeks.

https://www.jalopyjournal.com/forum/threads/1950s-tube-frame-sports-car.993579/page-4#post-12780802