That hoard is absolutely incredible.....congrats....By the way , your oldest is older than you say. Caped dimes were only minted up to 1837.? Im sure that was just a type-o.....anyway, congrats again, youve potentialy got some big $ coins.....HH..
.....the mint mark on seated quarters is below the eagles tail....on half dimes it is under "half dime" either above or below the wreath bottom depending on date.......JO