Uh, remember high school chemistry? Mercury is a LIQUID at room temperature so it would be really, really, REALLY tough to make a coin out of it!
This design is nicknamed a "Mercury" dime because the portrait of Miss Liberty with a winged liberty cap looks a lot like the Roman god Mercury, NOT because it's made of the metal mercury.
Anyway, look at the back of your dime by the E in the word ONE. If there is a tiny S there your dime was made in San Francisco and is worth anywhere from $2 if very worn, up to about $15 with only moderate wear. If there's no letter it was struck in Philadelphia and is worth from $2 to $4.
The 1923 Mercury dime is a common date coin, average circulated coins are $4.00-$7.00, better grade are $15.00-$30.00.
The value of a Mercury silver dime varies depending on the year and condition. At a bare minimum they start at close to $1.85 each.
The value of a 1943 Silver Mercury Dime in circulated condition is about $3; in uncirculated condition, $7 to $8.
The 1941 Mercury dime is very common, most are valued at $2.00 just for the silver.
Most dimes of this date are valued for the silver only, about $1.00
This is a very common date for Mercury dimes. If it has any wear at all the value is for the silver, about $2.00.
If it has any wear at all the value is just for the silver about $1.00.
See the related answers below.
1943 is a very common Mercury Head dime. Most are only valued for the silver, about $2.00.
If it has any wear at all, the value is just for the silver about $1.80.
Circulated coins are $2.00-$5.00 and uncirculated are $10.00
Yes - the "Mercury" dime from 1916 to 1945 has 90% silver in it