The urn is on exhibit at the Nikola Tesla Museum

1957
At the request of Sava Kosanović, the youngest son of Tesla's sister Marica Kosanović, Charlotte Muđar, Kosanović's long-term associate, in 1957 in Belgrade from the USA he transfers an urn with Tesla's ashes and, according to the family's wishes, hands it over to the Museum for permanent storage.