Brass candlestick holder with unusual marks underneath

I found this at a yard sale, and cleaned it up...seems to be brass, as it passed the magnet test. It has a couple marks underneath, but couldn't find anything on the internet, so I'm asking you experts!
It measures 10" high, 8-3/4" at its widest, holder part is 1-1/4" across, and 7" deep.
If you have any insight, I would appreciate!