These solid brass coins are not damaged. Only the case around the coin is damaged in one way or another. They could have a scratch or a crack. These are prefectly fine if you do not need the coin case anyway. They are also great for practicing.
There are no refunds for any misfit products.
These are solid brass coins and are 40MM round and 3mm thick.
xTool F1 settings: Spray coin with Brilliance laser spray, BL 100 power, 3 Speed, 300 LPCM, 1 pass