Adersen Bay Casement Window Operator stamped "39"

A home owner from Wheeling, WV says:
Swisco,
Please confirm for me the operator that I need to get my window working agaign. I need, for two windows, a left and a right straight arm operator. There is just one number stamped on the arm top, 39
My guess is that I need 39-094 and 39-095.
These Andersen windows were installed in the mid 80's.
Thanks for your input.
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
The 39-094 and 39-095 are two possible replacements, yes, but I can't really confirm. You will have to carefully compare the dimensions of your operator to the specs we show to see how well they match, specifically the length of the arm. You may also want to see our 39-150 and 39-151.
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