Experts kept the find secret until a team dug up 400sq metres of land at the weekend.
But upon closer inspection, they realised that it was a shimmering piece of silver, German media reported.
"This trove is the biggest single discovery of Bluetooth coins in the southern Baltic Sea region and is therefore of great significance", the lead archaeologist, Michael Schirren, told news agency DPA.
As per Some statement released from the Mecklenburg-Vorpommern State Business Office for Tradition and Historic Preservation, the teenaged boy and a volunteer preservationist found the Very First silver item in the municipality of both Schaprode at January.
Discovered by a 13-year-old boy and his teacher, the find consists of necklaces, pearls, brooches, bracelets, rings and up to 600 silver coins - and some of the treasure has been linked to a famous king who lived over 1,000 years ago.
But when the pair cleaned it, they understood it was more precious.More news: Thousands of Android apps potentially violate child protection law
More news: Gorilla Gives Birth to First Son Moke at Smithsonian Zoo
More news: Giant asteroid 2018 GE3 makes a surprise flyby past Earth on weekend
The oldest coin in the trove is a Damascus dirham dating to 714 while the most recent is a Frankish Otto-Adelheid penny minted in 983.
The find suggests that the treasure may have been buried in the late 980s - also the period when Bluetooth was known to have fled to Pomerania, where he died in 987.
He is credited with unifying Denmark and introducing Christianity to the Nordic country. He ruled between 958 and 986 and came to be known as Bluetooth because of his dead, blue-ish looking tooth.
The Baltic island of Rugen, now in Germany, has proved to be a fertile hunting-ground for archaeologists and treasure hunters when it comes to finding relics of Denmark's Viking past.
The technology, developed to wirelessly link computers with cellular devices, was named after Bluetooth because of his knack for unification. The symbol of Bluetooth is also a mixture of two letters of runic alphabets representing the initials of King Harald.