thank you for your posts, I will answer in my next post! I need a lot of time to write, my school days are decades ago.
First the text as an answer for Ric
hard to say, but i suspect that materials with different composition can be seen in the x-ray. A weld seam is also clearly visible on such a picture - and it's usually made of the same material as the rest.
I have another question. Assume that the Totenkopfring consists of 90% silver and approx. 10% copper - and the ring band is only one piece and was cast... It is certain, that both materials solidify so (when cooling down) that the composition of the alloy is the same on all surfaces? Or is it possible, the structure of the alloy separate while solifidy? If the alloy is mixed differently, it may be that a material examination (inside and outside) does not help.
An important question, perhaps only to be determined by a test casting.
