Shortly before she and her family went into hiding , Anne Frank gave some of her toys to a friend for safekeeping -- a tin of marbles , a tea set and a book . Anne had regularly played with Toosje Kupers on the streets of their Amsterdam neighborhood and tasked her friend with looking after her treasured possessions . The next part of the story is well known -- the Frank family 's suffocating experience of spending 25 months in cramped quarters , hiding from Jewish persecution by the Nazis . The world learned the harrowing tale in Anne 's own words , written in her now widely read diary . Now , some 70 years later , Frank 's colorful marbles have been rediscovered and will go on display for the first time at a World War II exhibition in Rotterdam . `` Anne gave these to her friend for safe-keeping , '' Teresien da Silva , head of collections at the Anne Frank House museum , told CNN . `` She kept them for when Anne returned , but Anne did not return . '' Kept in a box . Frank 's account of hiding in Amsterdam during World War II , published posthumously in English as `` Anne Frank : The Diary of a Young Girl , '' has moved millions of readers across the decades . The young girl , with her parents and sister Margot , had moved into a concealed apartment on July 6 , 1942 -- the `` Secret Annexe '' on the Prinsengracht Canal . Only a small circle of helpers knew of their whereabouts , and the family lived in fear of being discovered . They were betrayed , arrested and deported in August 1944 . Frank died of typhus in Bergen-Belsen just weeks before the Nazi concentration camp was liberated in 1945 . Kupers had kept the belongings , only finding them decades later when moving just over a year ago . `` She discovered she had the marbles somewhere at home in the attic , '' da Silva said . `` She immediately contacted us . ... We were thrilled that the marbles survived and had been kept . She decided to give everything to the Anne Frank House -- the book , the tea set and the marbles . '' Treasured marbles . The Anne Frank House Museum has already displayed the book , which Frank received for her 13th birthday , as well as the tea set , da Silva said . `` But we decided to present the marbles for the first time in Rotterdam , '' she said . The marbles , alongside 99 other objects , make up the exhibition The Second World War in 100 Objects , which opens to the public this week . Dutch king Willem-Alexander will open the exhibition Tuesday . Da Silva said Frank was one of many Jewish children who gave away their toys before going into hiding or being deported . `` For children during that time , marbles were a treasure . They worked very hard to win them , '' she said . While the marbles are old , she said , they are in good condition . Editors ' Note : This article has been edited to remove plagiarized content after CNN discovered multiple instances of plagiarism by Marie-Louise Gumuchian , a former CNN news editor .
Anne Frank gave her toys to a friend for safekeeping before going into hiding . Comment: The box of marbles will go on display at a World War II exhibition . This is the first time the colorful marbles will be shown to the public .