Hello and welcome.

Peter is correct; these aren't "coins". They're card game counters. As such, "errors" are more likely to occur, since quality control at the badge factory they were made at would be less stringent than at a government mint.
It isn't the only "error" on your piece. The date is wrong, for starters: Queen Victoria did not become queen until 1837. And "H.M.G.M.", which presumably stands for "Her most gracious majesty", is the incorrect title for a reigning queen. It should be either "Her most excellent majesty" or simply "Her majesty". HMGM was (and is) the title used for wives of reigning kings.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis