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Identifying movements by the stems

Pinion Minion

World Class Breaker of Movements
Supporter
Certified
5/8/22
1,931
5,613
113
Texas
Hola-

I have these two GMT 2 cheapies that I'm ruining on my bench. At first I thought they had the same movements- but the stems are quite different in both length and topography.

Can anyone identify the movements by the stems??