The auction for a one-of-a-kind piece of Babe Ruth memorabilia opened Wednesday. A gold pocket watch owned by the legendary slugger has been consigned to the auction by his grandson and has been generating a lot of mainstream media attention. SCP Auctions is selling the watch, which dates from the 1948 celebration of the 25th anniversary of the opening of “The House That Ruth Built”. Bidding opened at $50,000 and within hours had vaulted to $73,205. The watch is estimated to sell for upwards of $750,000 by the time bidding wraps up on May 17.