By Gautam Varier A jersey that LeBron James wore in the first half of Game 7 of the 2013 NBA Finals was sold for $3.7 million at an auction on Friday. The 2013 NBA Finals will live long in the memory of basketball fans. It was a back-and-forth series between the Miami Heat and the San Antonio Spurs and had one of the most iconic moments in the history of the league. That moment was, of course, Ray Allen’s 3-pointer in the closing stages of Game 6 and it tends to overshadow what happened in that decisive Game 7. It was a LeBron James masterclass, as he finished with 37 points, 12 rebounds, and …