Replacement for front door lock set

A handy person from Chesterland, OH 44026 says:
Only marking is CES ON LOCK. It seems to match the Brass Atrium lock set
Also, need a matching inactive handle for other door
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Bob from SWISCO responded:

I'm not certain, but take a look at our 82-400 Atrium Lockset. Compare the dimensions of the handle set and mortise lock to your existing hardware. Let me know if this seems to match up, or if it differs in any way.

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