How much, if any, is a 1967 silver dime, and a 1917 half-dollar worth?

The dime is fully silver. The half dollar is quite old, with the image fading, you can still make it out very clear on what the image is.

The Dime: The last U.S. silver dimes were struck in 1964. Please check the edge of your coin. It should be dark- or copper-colored like other dimes with later dates, indicating that your coin is an ordinary cupro-nickel dime from circulation and is worth face value only. The Half-Dollar: 918 WALKING LIBERTY HALF DOLLAR - Walkers can be valuable. This is a hard question to answer without knowing the coins grade. The value factors are their grade and how rare the coin is. The Coin grading scale runs from 1 to 70. If circulated the coin can not grade higher than 59. They are in demand in high grade by collectors. Also this coin was made at three mints. Look for a mint mark letter on the front below In God We Trust. Look for a mint mark letter on the front below In God We Trust. To be properly valued it will have to be graded by an experienced person. for the highest value it must have never been cleaned and be free of nicks and dents. Features (to grade the coin) to look at are the date and head and hand, folds in the dress etc.. With this criteria being met it could sell for $600 if made at Denver in mint state grade-61. For the circulated values the amount is less. I can only give you a range of prices for a 1917 Half. Good (Grade 4) = $6 - $8 Very Good (Grade-8) = $8 - $10 Fine (grade-12) = $10 - $30 Extremely Fine (grade-40) = $50 - $200 Almost Uncirculated (Grade-50) = $140 - $350 The D and S mint coins are worth more. With the Denver mint coin most valuable half for 1918.These values are estimates depending on condition, type and mint mark yours may be more or less valuable. Based on your description I'd say your half dollar is probably worth $2 - $3.5...