Colonial Issue, 1942-1944 were all for use in the British West Indies. .500 Silver and relatively low mintage Here is the info https://en.numista.com/catalogue/pieces2840.html
I use en.numista.com for ID on world coins. They are fairly thorough and give good info on the coins.
Google lens has identified every coin I've tried with it. Best part is it's already part of my Android camera app.