1970 NBA Celtics at Knicks Dave Cowens NBA debut ticket stub SHARE ON: russ — May 15, 2018 Tags: 197070'sBasketballBoston CelticsDave Cowensmadison square gardenNBANew York KnicksNew York NYVintage 1970 NBA Celtics at Knicks Dave Cowens NBA debut ticket stub Winning eBay bid: $125 Winning eBay bid: $125