I may well be having a senior moment here, but I can't seem to find this ten pence coin in the catalogue. Dated 1983, 2nd portrait, large type. What am I missing?
https://en.numista.com/catalogue/pieces11028.html
Not issued for circulation; in sets only.
I guess enough were already in circulation, and they
just made some to keep issuing the year 1982 1983 1984 sets.
That 28.5mm is the large size, and 24.5mm nowadays.