About 1 mm. You can always use a ruler.
Yes - the "Mercury" dime from 1916 to 1945 has 90% silver in it
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1945 is the last year of issue for the Mercury Head dime. The coin is very common and most are valued at about $2.00 just for the silver.
If circulated, a 1945 dime is only worth about $2 in silver scrap. If uncirculated it is worth about $3 or so. 1945 dimes aren't rare but are 90% silver.
The 1945 nicro S Mercury Dime is 90% Silver Mercury Dime that was minted in San Francisco. San Francisco used different types of punches in 1945.
A 1956 Canadian dime is worth approximately 2 dollars.
Most dimes of this date are valued for the silver only, about $3.00
A 90% silver 1945 Mercury dime is fairly common and sells for melt (about $1.60 at today's silver prices) if circulated and $20 or so if absolutely uncirculated.
Most dimes of this date are valued for the silver only, about $1.00
It's a common date, currently worth about $2 for the silver.
80% silver, 20% copper, with an original weight of 2.33 grams.
All Mercury dimes are 90% silver and 10% copper. They were struck from 1916 to 1945.