Quicksilver-75
4 of a Kind
I've not seen a chip like this before. Edges look pretty sharp so I'm assuming a reputable company. But possibly still just an RT plastics type chip?
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/163713140744
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/163713140744