Need to replace missing handle and maybe locking mechanism

A landlord from Jonesboro, GA says:
Does anyone know what type of door locking mechanism this is?
User submitted photos of patio door hardware.
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Tom from SWISCO responded:
It's difficult to say. There are a few different things one has to consider when encountered with a situation like this, but two aspects in particular are very important: what is the distance between the installation holes, and can the new thumb turn interact with the old mortise lock?

With that in mind, I think a good place to start is our 82-069 patio glass door handle set. Carefully review our details on this part with those two questions in mind. Do you think you could use this as a replacement?
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