There are no ridges what so ever.. it's pretty much inter graded into the black paint. The outer silver ring around the emblem is raised/rounded but also inter graded into the black paint with no ridges. Very smooth. If someone added this, they went to a lot of trouble. The P.O. denies that it was ever changed.
It's not separate pieces integrated together. Just all one piece. But I'm guessing that's what you're meaning. So nothing unusual there. There is also a raise on the outer circle. That's normal too. The other text on yours is the only unusual part.
I just grabbed all my original sales literature and dealer sheets from when the bikes were new. None of those pics show it. Also quickly scanned through all the old pics I'd ever taken of old SERGs over the years. Again, yours is the only one with the extra script.
No idea what's going on. Everything that can be compared suggests it's a one-off. That still leaves the question, "from where?" It's an interesting oddity. Enjoy it's uniqueness.
