As stated above it is a bullion round produced by The Golden State Mint in central Florida. They are good looking pieces
IMO no, not the same. Also none of the die markers are visible in your photo
The only thing I am aware of about '88 D cents is there are 2 varieties. It involves the G in the designers initials, regular G or flared G
Welcome to CT. I suggest that you read up on the minting process, and how dies are made. There are also various videos on these subjects online....
Looks to be a currency token by the British Copper Company. See if you can identify any more details from this site as you have it in hand...
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