I was just pointing you in the right direction for an answer to the question you asked on here about the core.
As for my mentioning the other UK stuff that are similar to the first one you asked about (with a central core), I was just offering information on others that are known to have the same style but maybe the Portsmouth ones are like the 2nd one you just put up.
Some of the Le Cercle jetons (and £5/£10 plaques) have 2 slightly different shades but there is no rhyme nor reason as to why and all were made at the same time but different cores is another story so that yes, it probably means 2 different orders.