Dave Sr. from SWISCO responded:
June 9, 2016
I believe you have the 39-089 operator. However, it seems you have a short link arm based on what I see in your photos. There are two ways to adapt the 39-089 for use: you can move the sash bracket to meet up with the longer 5" arm of the 39-089, or you will need to reuse your existing link arm by using the 62-014 rivet to attach it to the new operator.
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