Won't lock

A quick learner from Raleigh nc says:
I need a replacement lock can you identify this part and handle. It's from the early 80s.
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Emily from SWISCO responded:

Hi there!

Start by taking a look at our 82-002WK handle set and compare our dimensions with yours to see if this matches your original assembly. If you needed a new pull, see our 88-002 .

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