PCGS 1960-D Roosevelt dime split before strike, with the rough, split side on the coin's reverse. It is difficult to find fully split before strikes on silver coins, as they are scarce. AU58
NGC 1964-D Roosevelt dime split planchet before strike. The planchet split in half before the coin was struck. The rough, split side is on the dime's obverse. Very scarce error type on silver...
NGC 1955-S Roosevelt dime struck on a split before strike planchet. The planchet weights 1.77 grams, which is a little over half the normal weight of a dime. Split before strike dimes are scarce...