Jalousie window operator

A quick learner from Queens,NYC says:
Hi I'm trying to find this operator, the mounting surface is 5 1/4' the measurement from hole centers top and bottom is 4 3/4', the link arm is 3 1/8 long and 2 1/2 from mounting hole to hinge hole or round rivet, the swinging arm extends about 1 1/4 out.
The are marks on the bottom pat pend possibly y & T with 2 underneath and a circle with some inscription. Thanks for your help.
Regards, Bruce
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Dave Sr. from SWISCO responded:
We do not carry your exact operator, I'm afraid. That said, what I've done in the past was to use our 39-165, but I think in this instance the 39-346 could also work. See what you think.
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