Top latch stop working

A quick learner from Alabama says:
I need to replace the latch and key lock. Can you please help me to select the correct parts?
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Casey from SWISCO responded:

Hello,

If all you need is a new thumb latch and key lock, see the 82-107 and 82-310. We've also related other products for you to consider based on the parts shown in your photos, such as the 82-265 mortise and 82-086 handle set. Thanks for posting! 

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