A tin of marbles belonging to Anne Frank has gone on display for the first time, 70 years after she entrusted it to a friend for safekeeping.

The young diarist left the marbles, along with other treasured items, to her non-Jewish neighbour Toosje Kupers when her family went into hiding in 1942.

They took refuge in an attic in Amsterdam, but were soon found by German authorities and sent to the Bergen-Belsen concentration camp, where she died of typhus aged 15 in 1945.

According to Ms Kupers, 83, she offered the items to Anne’s father, Otto Frank - the only member of the family to survive the Holocaust - when the war ended, but he said she could keep the marbles.

They remained in a cupboard and were only recently discovered when Ms Kupers was moving house. She then donated them to the Anne Frank House Museum in Amsterdam.

The marbles are now on display at Rotterdam’s Kunsthal museum as part of an exhibition on the Second World War.

Museum spokeswoman Annemarie Bekkers said that Anne was one of many Jewish children who gave away their toys before being sent to concentration camps during the Holocaust.