Need a New Sliding Door Handle

A home owner from New York says:
I need a new door handle for my sliding glass door. Mine is falling apart. The front of the handle is cracked in several places. Also, the top screw wont screw into anything because the location where it's supposed to screw into on the back handle is also broken. I don't see any numbers or markings on our handle except for the name Dorwal. I'm afraid to take it apart for additional pictures because I'm afraid it will crumble apart or that I'll never get it back together, which would be very bad because we use this door many times a day. If there's any way you can tell what I need from the photos I've attached, I'd really appreciate it. Thank you.
Thumbnail of the uploaded file named Door handle back.jpg
Thumbnail of the uploaded file named Door handle front.jpg
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Tom from SWISCO responded:

We don't have this exact handle set, since Acorn/Dorwal is no longer in business, but I believe that you can use our 82-055 as a replacement. Look it over and let me know if you agree.

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