This vintage 1998 White Castle Hamburgers Heavy Ceramic Coffee Mug/Cup is a must-have for any collector of restaurant and fast food memorabilia. The mug features the iconic White Castle branding and is made of durable ceramic material. Its white color and original design make it a great addition to any collection. The mug was created in 1998 and has not been modified. It is an original piece and comes with a California Prop 65 Warning. The type of advertising is a mug/cup and it is perfect for adults who love collecting unique items. The country/region of manufacture is unknown, adding to the mystery and allure of this piece.