Quote:
sap weight is 27grams weight in water is 2.49 grams
specific gravity is 10.8 does tat sound right
I assume you meant to say "24.49". A weight in water of only 2.49 means it's almost floating so would give an SG pretty close to 1.
SG = 27 / (27 - 24.49) = 10.8
Quote:
here is a coin 45.5mm like mine must be fake also from the Gansu province (Kansu))
The Krause listing for KM/Y 407 shows a perfectly normal-sized dollar coin, 38mm across. If the numista one really were 45mm rather than a typo, then yes, it's fake. The picture was pulled from a
Heritage auction so I'm pretty sure it's genuine; I'd assume Numista simply has the size wrong.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis