Rear axles off of a atc?

[Troyg25]

Going though some old stock and ran into these rear axles. Unsure what they were used on but one looked like a 200x until I got it home.

Anyone have any idea looking at the splines and placement of the threads?

Thank you

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[shortline10]

Top one is definitely 83-85 200x
Other one I’m not sure , probably a utility trike like a 200m or 200e

[Troyg25]

Bang on shortline

Off a 84 200m. Mystery solved

Thank you