Identification of old UK(?) token "THK GORDON"

I found this token in an antique shop in a basket of metal detecting finds, in the West Midlands of the UK. As far as I can tell, it seems to read "THK GORDON", presumably a company name. Nothing comes up when I search on Google.

It's roughly 17.5mm in diameter, 2mm thick, has a 1mm hole in the middle, weighs roughly 3g, has a reeded edge, and presumably has copper in its composition going by the greenish patina. Thanks in advance.

Hello,

I think it's a button.

Citeer: "Camerinvs"​Hello,
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​I think it's a button.

​Ah, that hadn't occurred to me, but I think you might be right. It would explain the hole in the middle.

I think that it says "The Gordon", which is a type of shirt collar. Which make me think it is collar stud.

Happy Holidays!