The Riviera Las Vegas Black Delmonico Dino's Den Hotel & Casino Ashtray is a collectible piece that showcases the theme of a casino, specifically from the United States. This ashtray likely holds sentimental value for those who have visited or worked at the casino, serving as a reminder of the glamour and excitement of the gaming industry. With its unique design and historical significance, this ashtray would make a great addition to any collection of casino memorabilia.