Hi Aidan,
Of course, I already had a look at that, but found no images of the years not listed in SCWC. Mint sport is not explained at all, it's just there. It's a nice documentation of Pakistani coins, but not complete because of all the missing images!
It's too easy to say 1952 and 1953 were minted, without any proof in image form.
So my opinion is still the same, without proof, no need to mention missing years for any coins. Produce the images and I'll be the first to believe they exist…
Globetrotter
Coin varieties in French:
https://monnaiesetvarietes.numista.com