Cole Sewell Lock and Lever

A quick learner from Virginia says:
I have what I believe is an old Cole Sewell storm door, which I was able to identity using another post. In that post, it was recommended to replace the interior lever handle with 40-145. But my trouble is coming from the lock. I don't know a lot about locks and I don't know where to even begin replacing it. I just bought the house and do not have the key. Is this something that you can offer advice on? Should the interior handle be replaced with anything other than 40-145?
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Tom from SWISCO responded:

Hello! If you were looking to replace the whole set, key lock and all, then I recommend the 40-058. I have used this to replace your old Cole Sewell set before and I find that it works very well. Look it over and see what you think.

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