I talk about the 1975 Proof No S Dime worth $456,000! There are only 2 dimes like this known to exist and there could be more of them out there. You won’t find these in pocket change because they are proof coins. I’ll tell you where to look for them and if you’re lucky enough to find on you’ll have a coin that you can retire from! Don’t confuse this with other no mint mark dimes. Most Philadelphia minted coins don’t carry a P mint mark.