This one has taken me years to find. I recently did a thread on the Amethyst here
https://www.britishbadgeforum.com/fo...ad.php?t=90977
Then one turns up! I was lucky enough to get some of the history behind the Rating who owned this tally. He wasn't on the Amethyst during the Yangtze incident, but served on her during the Korean War.
Out of all the tallies that I have actively been seeking over the last 40 years or so, this has been the hardest to find. I am now looking for HMS Consort and HMS Black Swan.