If you zoom in on the lower right corner it looks like R50G, or R50, which searching I found an article on it from 2013 so it could be up to 10 years old.
My guess would be it got rotated out of use a few years ago and repurposed to where it was found.
If you zoom in on the lower right corner it looks like R50G, or R50, which searching I found an article on it from 2013 so it could be up to 10 years old.
My guess would be it got rotated out of use a few years ago and repurposed to where it was found.