Good day all. I decided to look at all the coins I have acquired (disappointing) and I have several 1916-1920 Mercury dimes. None are uncirculated and most look like the one I have attached. Are they too worn to be considered more than face or melt value? Third picture- Looks like someone tried to make a button out of a 1963 quarter. Definitely seen some heat. I'm sure it's worth 25c at best.