Vintage Tubular Chair

I was recently given this chair from my husband's grandmothers brother. It's in amazing condition and I am trying to find out more about it. I can't find any tags or markings what so ever. I have been researching online and have only been able to figure out it is a 'tubular' possibly 'tub' chair. Does anyone know anything more about this style of vintage chair, what it might be worth, or any pointers on figuring it out?

I have been on the look out for furniture to refinish but this is in such great shape I don't want to touch it! My husband and I aren't sure if we really want to keep it so I am just trying to figure out exactly what we've got!

Thanks for your help!!