They were doing something up in the rafters of the basement of my parents house and found a couple beer cans stashed up in there, probably from when the house was built.
The one I recall is "Carling Black Label" and it came in a very simple can. It had been opened with a can opener, the kind that put a triangular hole in the can.
About thirty years ago, we bought a rowhouse, built ca. 1983, in the Maryland suburbs of Washington. One neighbor, a first owner, said that he had found a lot of beer bottles back by the heating unit in his basement.