Mr Martin was stunned by the discovery. Photo / Supplied
A British man unknowingly used a 4000-year-old piece of pottery to house his toothbrush for several years before it was appraised.
Karl Martin, a 49-year-old collector from Derby, purchased the clay jar at a car boot sale, along with another pot for a total of $A7 (NZ$7.33) about five years ago.
The jar featured a painting of an antelope and caught Mr Martin's eye immediately, reports news.com.au.
"I liked it straight away," Mr Martin said, in a statement released by London auction house Hansons.
According to the statement, Mr Martin used the pot as a toothbrush holder for the last several years, completely unaware of its age and value.