I saw this somewhere and had the same question- I'm not sure. I know there's brassy skulls (it looks hollow too) and wider bands
Like this, the markings seem to be right, but the Frey mark seems a bit fuzzy- to be honest I didn't know Frey made this pattern. That's what an alpaca mark should look like and I see a join seam- since it's alpacca it wouldn't have an 800 which is usual, behind the skull. So it's a tough one- I'd have to lean toward good though- but I hate the fuzzy stamp and the fact that someone scratched the insides. I'm just not sure it's TR period- maybe earlier. That's my best guess on it...