According to Coca Cola company, the dash has always been there from 1886 to 2009, yet people said, “There was a time back in the 70’s and 80’s there was no dash.” And I finally found residual proof that they are right. In the movie Weird Science (1984-1985), the second time he takes power from the military, the guy is drinking a Coke, and there is no dash….check out images, one is enhance to amplify that point.