The Curmsun disc is a concave gold disc weighing 25.23 g (0.890 oz) and 4.5 cm (1.8 in) in diameter. The inscription on the disc refers to the Danish Viking King Harald Bluetooth . The characteristics of the disc are typical of Ottonian art .
Kurmsun represents the patronymic of the king (son of Gorm the Old ); in standardized Old Norse , Gormsson .
The Kurmsun disc was discovered as part of a Viking-era treasure trove discovered in 1841 in the cellar of a ruined church in the village of Gros Wieckow in Pomerania (now part of the Wolin Commune, Poland). The site is east of the bank of the River Divenow and not far from where the semi-legendary Viking citadel of Jomsborg stood between 960 and 1043.
According to Swedish archaeologist Sven Rosborn, the entrance to the crypt was accidentally discovered by 12-year-old Heinrich Boldt, who was playing with younger children on a construction site near the ruined chapel.
After its initial discovery, the treasure remained in the crypt until 1945, when Polish Army Major Stefan Selski and his brother Michal entered and seized what was left of it. The disc was not made of gold, so it was placed in a box of old buttons. In 2014, Michal Selski's 11-year-old great-granddaughter showed the disc to her history teacher, and it was reported in the press on December 5, 2014.
On the reverse is an octagonal ridge wrapping around the edge of the object. In the center of the octagonal ridge is a Latin cross . The Latin cross consists of four dots. Such dots are common on coins, even those of the late 900s. The four dots may have symbolized the four evangelists, whose symbols in the Middle Ages had strong associations with the symbolism of Christ on the cross.