I think you are showing us the picture of two different watches.
The pictures with the dial shown look like a rail track dial 14381 or 14393. The pictures with the movement are of another watch. Compare the crowns and case, especially the lug area,
If the railway dial has the correct movement ie a 561 or 564, to be honest I´m not sure which, and a decent and correct case back then at $320 it is definitely a big buy!
The railway dial is not often seen and a very nice version to own
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