The Curmsun Disc is a convex-concave gold disc that gained scholarly attention in 2014 after an 11-year-old Polish girl in Sweden showed it to her history teacher. Some scholars have tentatively dated the disc to the 10th to 12th century, although its authenticity is not universally accepted by historians or archaeologists.[1]
The disk weighs 25.23 grams (0.890 oz) and has a diameter of 4.5 centimetres (1.8 in). The Danish Viking king Harald Bluetooth is mentioned in the inscription of the disc. The disc's characteristics are influenced by Byzantine coins and seals.[2]