The most valuable item found there is a framed pair of faded blue boxer shorts with white stripes that allegedly once belonged to Belgian Finance Minister Didier Reynders.

“The certificate confirms the underwear’s authenticity,” Bucquoy says, pointing to a signature written with a shaky hand that he says belonged to Reynders. Bucquoy claims that Reynders donated his knickers to the museum, which opened in early July.

The museum boasts 10 other articles of celebrity underwear, most of which were donated by Belgium artists, singers and politicians.