Ric,
I base my evaluation of SSTK being cast on the fact that they come no where close in perfection, compared to an item that is die struck or manufactured using pressure and weight. We can actual see this visually with the way that liquid silver fills the void of the mould in different way, on different rings. Antonio furthers his assessment backed up by scientific evidence pointing to the conclusion that these rings are in fact cast. If I may ask, what evidence can you point to that you base your " die pressed" theory on, in regards to the manufacturing process of these rings? Is it just a guess, or do you have some actual evidence to back that up with ?

P.S If you're still riding that train with the implementer of ring COA's, you may want to think about stepping off. That train derailed a long time ago.