does' this mean that everything we have been told about these things is wrong?
I believe the answer is yes. Look for example this ring with totally erased inside engraving: a clear air bubble is visible in the band.
Gaspare, I can confirm the fact that almost each ring, was finished by hands. Especially the '30 style rings.
Furthermore on the top of the ring there are some recesses areas that are orizzontal, and there's no way to do them with a die struck process. I spent hours trying to understand, but there's no other possibilities IMO. Private purchased rings, skull rings for example, are much more better in details, and they don't show all the casting signs that are visible in TK rings.
Look at the attached pictures, the second shows recesses on the thickness of the ring.
