locking patio door

A home owner from Oklahoma City says:
August 8, 2017
The locking mechanism on my sliding patio doors broke and I need an replacement. It was made from pot medal and cannot be welded.

The part # on the outside door handle is marked PT 1963 along with Sash Controls Inc. On the inside handle the markings are 1060-1943.

The locking mechanism on my patio door broke and I need to replace it. The two visible numbers are1060-1943 (inside handle) and PT 1943 (outside handle). The latch on the locking mechanism was cast from pot medal and cannot be welded.
Sliding handle
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Tom from SWISCO responded:
August 11, 2017
Thank you for contacting us. I am not exactly certain what hardware replacements you are looking for. If it should be the thumb lever, you may want to look at our 82-106. Your mortise lock has similarities to our 82-226. I encourage you to compare your parts to ours for compatibility. If you should have anything else, please let us know.
Sliding Door Turning Lever
Sliding Door Turning Lever
82-106
$3.95
Mortise Lock, 4-5/8"
Mortise Lock, 4-5/8"
82-226
$13.97
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