Patio door internal lock

A quick learner from Jackson Mo , 63755 says:
It has made in USA stamped on that side. It also has the number "1297" stamped on it.

What size to order to replace it?
User submitted a photo of a patio door roller.
Profile picture of Paul
Paul from SWISCO responded:
Take a look at our 82-229 mortise lock. I believe this could be what you need. Let me know if you agree!
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