If you’re looking for the most valuable 1959 proof dime coins, you should keep your eyes peeled for proof coins with grades of PR69 and above. Also, look for coins with PR68 Deep Cameo or higher.
The quarter was established by the Mint Act of April 2, 1792, along with four other silver coin denominations: half dimes, dimes, half dollars and ... value is determined by rarity and condition, so ...