First coins I looked at were CT coppers, but the letters are wrong for that and the letters we see appear to be on the Reverse side, not the Obverse side.
Usually there should be BRITTANIA or INDE ET LIB or some variation of that on the Reverse side. There also appears to be a date bar at the bottom.
Attached is the photo rotated 90*.
Either the answer to what this coin might be is so easy that the forest cannot be seen from the trees

, or it is an anomaly.
But, perhaps the best answer for now is that is could be a KGIII Evasion issue. Evasion counterfeits were made to circumvent the British counterfeiting laws, since they produced coppers with obverse and reverse designs similar to Regal coppers but deviated legends such as George Rules instead of George III Rex or Briton Isles instead of Britannia as examples.
Whatever it is, the coin is interesting because it is "different".
Don