This is the 2nd version of the 1966 pull-tab tin can design. By 1967, Coke switched to Aluminum cans. For confirmation, see the website:
home.comcast.net/~collectiblesodacans/Cokepg1.htm
Seems to have had a pull tab, and aluminum top, and that dates it to fairly recently. Before cans, there were bottles. While I'm here, great coverage of a unique topic. Thanks for doing it. Real detective story.