Possible Luzerne or Columbia County find

[Old Dude]

Hi all. Got out today for a hunt along a creek in Luzerne County that isn't too far from Columbia County. I found this little tool check and hope someone may have seen one like it before. There is the possibility it may be modern and from the Salem/Berwick nuclear power plant as well as from some business from decades ago. Thanks for looking and any help you give.

 

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[Old Dude]

Here's a cleaned pic.

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[Old Dude]

I took a picture of this check to work this morning and showed a co-worker. He immediately recognized it as being from a company in Berwick (Columbia County) that he worked at in the 1970's before they moved to either North or South Carolina. The company was called ARGO and manufactured military parts for the US government. I have looked online and can find no information on the site.