Years ago, CASINO 2000/Mandorf-les-Bains, Luxembourg, had tokens that were marked 1000 fine (approx. 1/4 Troy) on the rim.

They were the only casino tokens I've ever seen that actually read 1000 fine... though Mr S. from the Silver Slipper told me of their pure silver tokens that never made it to the closing. They, too, were FM material (along with the Sterling Silver).

JB