Given the notice-ables in the dbl.diamonds I be asking myself,
are those decals or are they painted-on?
The ring-work is nice, it's clean. It's common but this is a nice example.
It might be helpful for you to post a pic of the bumper end & possibly wght.blt.
Same for the other end, good pic of the jnt. & pin.
I'll hold-off guess for more detail.
KJ
Added more pictures