This vintage metal sign is a must-have for any collector of advertising and memorabilia. The sign features a striking red skull that warns of dangerous mine shafts and explosive gas. Made in the United States in the 1970s, this original Frishes Big Boy sign is a piece of history that will add character to any space. The sign is in great shape and would make a unique addition to a variety of settings. Whether you’re a collector or just looking for a cool piece of vintage decor, this sign is sure to impress. 100% authentic guaranteed Original. This was made by DOT, thick heavy metal. Priced to sell, check out my other listings.