A municipality employee in Germany found eight gold bars while mowing a stormwater retention basin.
After he reported the find in Bannetwitz, south of Dresden, officials discovered two more bars, with police valuing the hoard at well over €30,000 (£26,500).
Each bar weighs once ounce, reports local broadcaster MDR.
Investigators, who confirmed the invention on Friday, are attempting to find out whether the bars were stolen in burglaries or fraudulent crimes.
Thus far, they don’t look like linked to any existing cases. Engraved serial numbers will likely be used to find out the rightful owner of the gold.
The bars are currently being held at a secure location on the Dresden Police Headquarters.
Marko Laske, spokesperson for the Dresden Police, told said: ‘I’ve never encountered a case like this in over 20 years.
‘The undeniable fact that gold bars are turned in to the police as found property is amazingly rare.’
If no owner comes forward inside six months and police determine no crime has been committed, the find will likely be handed back to the municipality.
The municipality can then resolve what happens next.
Bannetwitz mayor Heiko Wersig said if the cash got to the town, he would really like to see it awarded to clubs in the realm.
He said he ‘could hardly imagine it’ when he first heard in regards to the discovery.
Last week, Metro reported on a person who sent a £10,000 gold to the Royal Mint only to search out it had been lost by Royal Mail.
Rob Hobson had bought the 100g gold Britannia bar from his dad’s inheritance and had agreed a buyback offer from the Royal Mint after it was valued at £9,731.
Get in contact with our news team by emailing us at webnews@metro.co.uk.
For more stories like this, check our news page.
MORE: Inside Madeleine McCann suspect’s life living in a tent after prison release
MORE: Nazi execution files put up on the market in auction called ‘The System of Terror’
MORE: Greater than 50 cruise ship passengers left floating at sea after boat sinks within the Caribbean