Morphy Auctions which has a location in LV is having an auction that has some of the rarest slot machines, old roulette equipment, Faro layouts, and 2 or 3 ivory dice sets. There is some non-gaming advertisements being sold also but the catalog has many great old gambling machines. Well worth the look even if you aren't in the market for a $15,000 slot machine.

The catalog is online at: http://www.morphyauctions.com/auctions/past-auctions/coin-op-advertising-3/