It opens a bathroom window! It is the left window and it was installed in 1954.

A quick learner from San Marcos, TX says:

The windows have been painted shut for years. Installed in 1954 on an addition to a 1935 Tudor Cottage. I got the paint broken way and was successful with 15. Got them open and cranks worked on all. Not sure way the last one broken. Need a replacement.

The window is metal with a metal frame on a wooden house.

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Tom from SWISCO responded:

This is some old window, but fortunately I think we have just what you need. Please see our 39-002 and let me know if you could get this to work on your window. We also sell the 39-001 for the opposite side.

Anatomy of a casement window
Anatomy of a casement window
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