Replacement Sliding door latch with handle

A home owner from CALIFORNIA says:
Please identify this latch. The inside and outside handles have broken off. It is marked with Canadian patent no. 919213.
User submitted photos of a mortise lock.
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Tom from SWISCO responded:
If it's the handles that you need, take a look at the 82-005 and see if it will fit. Is the mortise (the part shown) still working, as well?
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