Replacement cranks for aluminum 4 panel louvered windows?

HI, I need help finding these cranks. No names, ID #s or anything anywhere. They are white aluminum,4 panel -about 36" by 62" (? framed in so can't be sure).
The cranks are on the right.From the bottom 2 mounting holes to the third top hole it is 5 and 1/4". The bottoms mounting holes are about 1 and 1/16th" apart.the arm that attaches to the window brace between the geared arm is @ 2 and 3/8ths - 2 and 1/2". I re-measured the window extension arm and if I go center to center of the hole it is 1 and 1/4" spacing.

Thanks Tom.
I am going to order 1 unit and see if it works. I'll order more if it does. Not sure about the shoulder bolt screws but I'll see if the old one will tap in.

Thanks again,
Stan