The clue here was on the reverse, where Mr. Smith was referred to as "The Iron Man of Soccer", and an Iron is a kind of golf club, in fact they make up the bulk of the clubs in any bag, for they are suitable for many purposes rather than being specialised for one use.
The reason for the single code is the date of issue, for it is post 1970, and those issues are not in our current British Trade Index, they only appear in the four volume set which were originally published from 1962.
I do, however, have the original New Issues Report from the Cartophilic Notes and News magazine, it is extracted from Volume 5, no.56 of March-April 1974.
And if you want to see all the cards in this set, just nip over to Australia, to Nigel`s Webspace / Barratt Football Stars