Giesse single arm casement operator

A quick learner says:
Giesse single arm with end pin that connects in the plastic slider on bottom of sash.
Thumbnail of the uploaded file named IMG_0914.png
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Emily from SWISCO responded:

Thanks for reaching out to us! I'm afraid we're not familiar with this operator at first glance. Can you show us a photo of what the arm connects to on the sash? 

A quick learner says:
Truth Hardware Track Slider
Product Code: 39-529
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Dave Sr. from SWISCO responded:

Thank you for waiting while we looked into this. We believe the operator in your photos is obsolete. Do you have an under-mount track? If so, take a look at the 39-366 operator and 39-504 track. If you have a face-mount track, see the 39-028E operator and 39-533 track. The 39-114L is the compatible handle (sold separately). 

We can't make any promises but these parts are the best we can offer. Review the specifications and see what you think.

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