The Binion's Million Dollar display consisted of a hundred $10,000 gold-certificate bills in a horseshoe-shaped case protected on both sides with thick Plexiglas. The display was located in the rear lobby, at the top of the coffee-shop staircase.
There were two incarnations of it. The first, which went up in 1954, used uncirculated bills in numerical sequence. It lasted five years, till Benny Binion needed the money; he took down the display and cashed the bills. (The story goes that Binion called up an armored Brinks truck to transport the bills to the bank, then sent dummy bills with the truck and carried the real ones to the bank in his cowboy boots.)
In 1964, Binion decided to revive the display. He searched high and low and eventually came up with a hundred new $10,000 bills. These bills were rarely obtained by the general public, being used primarily for interbank settlements. (Their distribution ended in 1969, when the Treasury Department began removing them from circulation. The 1964 display stood for 35 years.)
From practically the very beginning of the first display, a photographer snapped free souvenir photos of visitors in front of the million bucks. Over the years, more than five million people had their pictures taken in front of the display; in fact, many recorded their various trips to downtown Las Vegas over five decades with separate photos.
In December 1999, then-Horseshoe owner Becky Behnen, daughter of Benny Binion who died in 1989, quietly sold the display to an unnamed private collector. At the time, it was the largest single collection of $10,000 bills in existence; in fact, only 340 $10,000 bills remained in circulation, so the Binion's display accounted for nearly 30% of the bills in circulation.
It's unknown how much was paid, but in 1999, according to experts, uncirculated $10,000 bills were going for about $75,000 apiece. However, it's doubtful that the Binion bills fetched quite that much, due to the 35-year-old glue used to hold them in the display case. It's believed the 100 bills, together, were sold for between $2 million and $2.5 million.