Someone's trophy case just got a whole lot cooler -- Roberto Clemente's Silver Bat award from 1964 just sold at auction ... and it came with a hefty price tag!!
TMZ Sports has learned ... the awesome trophy given to the Pirates legend for having the highest batting average in the National League during his tenth season has a new owner after being made available at SCP Auctions this month.
Bidding closed over the weekend ... and the final number came out to be $307,500.