This clears up a big issue , I have to except it as true
They call the 40% a clad coin so the out side of coin is true silver
with pure copper in center . It is important to clarifier as it is not an alloy of AG CU
they are sandwiched together separate metals .
I have been told nickels are a alloy of 75% CU 25% nickel AKA Cupronickel
I had believed the same concept was of the 40% called AgCu
Since they are sandwiched together the metals are isolated and a refiner
with precise control could manage .
interesting is the 90% appear to not tell of of being a clad with a 10% copper center
so the 90% could be a mild alloy . But I see now after research the use of the word Alloy was used with 40% when actually it is a sandwich
construction.
Any info as to 90% construction would be of help .
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