If you're trying to be fly like Broadway Joe, here's your chance ... one of Joe Namath's luxury mink coats has hit the auction block -- and is expected to sell for over $20,000!
Of course, the New York Jets legend was the king of drip back in the 1970s -- he rocked fur coats with regularity -- and TMZ Sports has learned one of them is now up for grabs at Heritage Auctions.
This specific coat -- that was given to the auction house by Namath's attorney, James C.