Will this product fit on Marvin windows from the early 1990s?

A handy person from San Francisco, CA says:
Will the 39-205 fit on Marvin casement windows from the early 1990s?
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Dave Sr. from SWISCO responded:
This crank handle will possibly fit your Marvin casement windows if you have a Truth or Wright window operator. Take a look on the operator body and if you can find the name "Truth" or "Wright" the 39-205 will fit.
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