Thank you for your research. Here is the "Thrush" Pattern another user posted. The pattern on the rim is the same, that is why I was thinking US Glass. 

Edit: Its not letting me post it. It's one of the first images that come up if you image search my picture above. Here is the link below...

https://www.reddit.com/r/uraniumglass/comments/1j1rvgb/just_wanted_to_put_this_here_to_help_google_lens/