Incidentally, the label on my bowl is a clear plastic sticky one not a paper one. I don't know when my bowl was made as I picked it up in a charity shop in Morecambe. It has Nuclear Electric etched on the bottom as well, so it's either a commissioned piece for someone at the power station or perhaps something they sell in the shop there (I'm talking of the Heysham power station here, just outside Morecambe).
Athena bowls are still made and are on the Dartington website catalogue.