Ringpulls through the Ages

In the UK comedy series "Detectorists", a running joke was "Ringpulls through the ages". If you live in a country where the (white) occupation is not much older than beer cans then they are no joke, it seems: "At 50, Ring-Tab Beer Cans Are Now Officially Historic Artifacts".

“It is a phase shift — people need to begin to recognize the artifacts, have a reliable reference, and actually take the time to figure out whether or not the artifacts are a cultural resource.

There's a place here for the metal detecting enthusiast to write that key reference book.

Hat tip Dick Stout's blog