Need to Replace Mortice Latch

A quick learner from Albany, NY says:
Holes are 4" on center which I cannot find anywhere.
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Jasmine from SWISCO responded:

Thanks for posting! Your mortise lock looks a lot like our 82-211 mortise latch and keeper set. Look over the dimensions and compare them to your existing latch to determine if this is the right fit. I am confident this is the replacement you'll need.

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Alternate image for 82-211


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