By Daniel Chavkin The Super Bowl III MVP was known for his mink coats in the 1970s. A Joe Namath mink coat with the initials “JWN” embroidered on the interior is being auctioned off by Heritage Auctions. The coat also comes with a signed edition of a 1969 issue of Esquire magazine and a signed football. The Super Bowl III MVP in 1969, Namath was well known for his personality and fashion sense along with his play on the field. Most notably, he wore mink coats on the sidelines with sunglasses on towards the end of his career, a style that helped him reach further celebrity status. Namath relish…