Can it really make white turn yellow? I thought it would have faded rather than darken. Ah well, I've already sent a note to the seller. Aside from the discoloration, it is NOT the chip he posted and in the post it states...

"THIS IS A $5 GOLDEN NUGGET 16TH EDT OBSOLETE CASINO CHIP. THIS IS A COLLECTOR'S ITEM. THIS CHIP IS IN GOOD CONDITION AS THE ACTUAL CHIP SCAN SHOWS."

THE ACTUAL CHIP SCAN! Nope - don't think so.