The same seller has this $25 Frontier mule for sale also ... though the workmanship really damaged it!

http://www.ebay.com/itm/Vintage-Original-FRONTIER-HOTEL-CASINO-25-CHIP-Las-Vegas-Nevada-Red-White-/352029845405

Unfortunately, the Silver Slipper $5 mule already has bids on it. The buyer will be disappointed. (Adam S. --- you should know better! than to link to such items, IMO! It sullies your reputation.)

http://www.ebay.com/itm/Vintage-Original-SILVER-SLIPPER-5-CASINO-CHIP-Las-Vegas-Nevada-Green-White-/262936096154

The actual seller may not know what he's selling -- these 2 chips are the only casino chips he's offering. He was probably duped by an unscrupulous seller up the line. Too bad.