Most collectors put a premium on blank slot cards (ones without names and account numbers).

But they are more difficult to obtain. About 40% of casino slot clubs will give you one or two if you ask.

So we all collect the ones with names on them. These can be obtained by signing up (always ask for two) and/or by harvesting (picking up lost or forgotten cards left in or around the slot machines).

Harvested cards can be traded on the Slot Card Board http://www.slotcardbbs.com/ or sold on eBay, or even traded for chips.

Thousands of card variations are listed in the Slot Card Bible (Wells-Lamb Price guide).