I have a 1977 Burger King glass with artwork of R2-D2 and C-3PO on it , I know that Burger Chef had A promotion for posters that had the same artwork that was on the glasses . I was always under the impression that Burger Chef later Became Burger King ( I live in the United States by the way ) and that is why the art is the same , but after talking with a friend , and doing a bit of research , it seems this is not the case and they were two separate entities . here is the Burger Chef commercial for the posters …https://www.youtube.com/watch?v=UCez7mZP_ws and here is the Burger King commercial for the glasses …https://www.youtube.com/watch?v=YCBUMErrxKI what baffles me is that I don’t remember seeing Star Wars promotions growing up in the 70’s and 80’s where the same artwork was used by different license holders . does any one have more info on this ?