Outer Knob Fell Off Cole Sewell Door

A home owner from Helena MT says:
I have a Cole Sewell screen door and the outer knob fell off. I took it all apart but it appears to just be worn out. I have a registration number,but I saw from other comments that Cole is no longer in business and there's no way to use the number for a replacement.
Below I added a photo of the parts, and another of the front door (unfortunately, the photo is sideways). Any suggestion for replacement? Thanks for any help you can provide.
Charlie Briggs
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Tom from SWISCO responded:

Thanks for reaching out to us! As you already know, we don't have an exact match for this handle set. I think the best option we can get for you is our 40-058. My biggest concern is the outline of your old exterior pull. I don't think ours will be large enough to cover it. Just something to keep in mind.

I'm sorry that we couldn't get you anything closer.

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