replacement casement operator - part or suitable adaptable replacement?

A quick learner from Hamilton, Ontario, Canada says:
Operator is 5" wide, 2 " deep with long arm measuring 11"
Only identifying stamp says MILA PAT PEND

I have intact vinyl cap, so any operator that would fit opening and have crank pivot 2.5" from edge of opening could be adapted and disguised if original part is unavailable.
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for posting! I recognize this operator. Unfortunately, we have never been able to find an exact replacement. The only other solution I can think of is using our 39-013 & 39-014 along with a new track, either our 39-505 or 39-533. I cannot guarantee that this hardware will work for you, but it is the best solution we have.
A quick learner from Wingham says:
Did you try this solution? And did it work?
A quick learner says:
Has any tired this solution. Have the same Mila hardware.
A quick learner from Canada says:
I have the same hardware does your recommended replacement parts work?
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