I have a Theo Wanne Slant Sig 2 hard rubber tenor mouthpiece . It also has that golden band. I know I saw a piece somewhere, years ago, with a crack in that area. Maybe Theo Wanne put it on all their HR pieces, for safety's sake? Looks nice, anyway.
I ordered an Essentials Jazz tenor mouthpiece. It arrived about a week ago and I've played it a few hours. It and the Slant Sig are 7*. I'm an intermediate player at best but I find the Slant Sig and Essentials Jazz play pretty closely. Bell notes speak a bit more easily with the Essentials and palm key intonation is better. The Slant Sig 2 projects more. But there's not a lot of difference.
The surface of the Essentials is pebbly. I thought that would feel strange, but no, it doesn't. The surface in the baffle area has grooves. In photos it looks like ridges, but no, it's grooves.