Broken window crank. need help finding replacement part

Question

window is 20x50". bow window has 4 separate window panes with the outside 2 windows that open and lock.
I do not see any markings on these parts. I think I need to replace the crank arm and crank.
The arm is 11 inches and I can not take a picture as the window will not open since it is broken. The other window has been replaces and the swing arm photo of the replacement is above in the first picture.

Bob · Accepted Answer

Thanks for posting. It's a bit hard to tell from these photos, but if it's a single arm operator, start by looking at our 39-216 and 39-217. Let me know if you think these match what you need.