It's worth exactly 10 cents.
A Mercury Head dime date 1926 with no mintmark has a retail value of $2.50 to $6.00 for a coin in average circulated condition.
In circulated condition $15.00 to $150.00 depends on grade
Assuming no mint mark this coin has a retail value of $4.00 to $6.50 in collectible circulated condition with a bullion value of about $4.00.
Average values are $2.25 to $3.50 for most circulated 1938 Mercury head dimes.
If you mean 1976 the value is 25 cents.
A 1976 US dime is worth its face value of 10 cents if it is circulated and in normal condition. If it is uncirculated or part of a special mint set, it may have a higher value to collectors.
Assuming the coin is circulated and has no "S" mintmark, the 1915 Barber dime is a common date, retail values are $4.00-$8.00 for most coins.
Assuming the coin is circulated and has no mintmark, retail values run from $2.30 to $2.60. The Philadelphia issue 1946 Roosevelt dime is very common.
If it is uncirculated it will be worth more than face value but if it is circulated it will be worth 25 cents.
A circulated 1939 US dime is worth about $2.70. An uncirculated US 1939 dime is worth between $9.00 and $20.00.
Value depends on how far off-center the coin is, so it needs to be seen. Take it to a coin dealer for a idea of value.
what is the value for an American 1909 silver dime