Nice brass coin with a Halloween pumpkin. For embossing you need to use a fiber laser like F1 Ultra or F2 Ultra.
If you use the L-shaped positioning piece on the F1-ultra, then the position of the blank coin is correct for project setting. The position should be checked by framing.
For the correct position, the L-position part must be pulled to the left and back in the direction of the arrow when tightening the screws. Position of L-shaped piece on F1-ultra is near to center workspace.