Searching for Vetter casement window part number 31300C

A quick learner says:
The gear and shaft for the window is broke off from the rest of the assembly. We also need the latch for the window. It is a left side latch on the window and the crank is to the right side of the bottom of the window unit. The windows are from the mid 90"s.
Part number on the latch assembly is 31300C.
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Lauren from SWISCO responded:

Hello, thank you for posting,

It appears that the spline has been stripped from the operator base which will require replacing the full crank mechanism. To further review, we will need to see the operator with clear images of the arm attachment(s).

For the lock, please start by reviewing the 38-075. Compare the overall style and dimensions to your original to confirm a good fit! 

A quick learner says:
Depress arm is 11 3/8"
Swing arm part numbers are:
L 31538A and 20810A
16 1/4" of total swing arm when window is closed
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Lauren from SWISCO responded:

Thank you for the additional pictures,

Please review the 39-031 and 39-032 operators along with the 39-107 cover and 39-114L handle. Compare all dimensions to confirm a good fit and let us know if you have any additional questions! 

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