I sort of wonder if the next generation will still romanticize Japan in quite the same way. We’re past the peak trendy-products era of Weird Sony and the Toyota MR2, anime is no longer a secret exotic thing, and it feels like if you want “15 years ahead of us optimistic techno future”, you could easily slide in Chongqing or Seoul instead of Tokyo.
Cobalt 60 has a half life of 5.27 years.
If the 7-1-63 is a date stamp of original manufacture, it’s gone through over 11 half-lives. There’s less than .05% of the original flavour.
I don’t know about the decay products, but I’d wonder how far we are from legitimately edible.