Are you seeking a mathematical estimate (0.90 * total weight in grams) or an answer specific to a specific coin? Typically, with the exception of 40% silver coins (which are actually 80% silver on the outside and 20% on the inside or something), we assume the distribution of silver content to be balanced through the coin. The reason 40% silver coins are different is they will typically lose a higher proportion of their silver with wear. After all, if the outside is 80% and the coin is 40%, the assumption is that every percent of mass lost on the outside will account for a 2% drop in the overall silver content of the coin.
As Ed McMahanon always said to Johnnie Carson, "I did not know that!". I had just assumed that the silver % value was throughout the coin. Thanks NK! Bill
40% silver coins have an outer layer of .800 silver and .200 copper bonded to an inner layer of .209 silver and .791 copper. Chris
Thank all for shareing. You can never learn it all and it helps when others share what they know with you. Thats why i mostly read the post than comment on them.
$1 face value of 90% silver contains 0.72 ounces of pure silver. There are 31.1 gm in a troy ounce, so $1 FV = (0.72 x 31.1) = 22.4 gm. A dime is one-tenth of a dollar, so a 90% dime contains 2.24 gm of pure silver. I am old-school but I like to figure things out for myself. Best Regards, :hail: George
90% $1 - .77344 oz. 50c - .36169 oz. 25c - .18084 oz. 10c - .07234 oz. 40% $1 - .3161 oz. 50c - .1479 oz. 35% (War Nickels) 5c - .05626 oz. Too many calculations! I use the KISS system.:devil: Chris
