How old is this grease gun?

[MikeH]

I got this recently but can’t figure out how old it is (I just want to know for my own curiosity, because I like to have old stuff I still use).
Any ideas? The tube in it looked pretty old-i didn’t think to get any pictures of that.

 

[Wrench97]

The hose could have been added at any time > https://www.amazon.com/dp/B017XYYP9M/?tag=atomicindus08-20

 

[930dreamer]

See results about
National-Spencer, Inc. (Company)
Founded: 1962

National-Spencer Inc (Distribution service in Wichita, Kansas)
9021 W Kellogg Dr, Wichita, KS 67209

 

[MikeH]

Thanks, I had seen they still existed, but didn’t realize they were founded in the 60s

 

[vssjim]

i would say yours is pre-import junk so probably sixties through eighties looks like it was made by Plews and relabeled for NS.