The items themselves have attracted extremely high bids, with some even selling as high as $7,000.
Super Mario Bros. is a widely-recognized and popular franchise that has spawned numerous iterations representing a large variety of game types, from adventure to sports games.
The ledger disappeared during the Holocaust and therefore is “stolen property,” the letter said.
Notable personalities expected to bid on the Christie's auction include Elon Musk and Uri Geller.
Among the items being auctioned is a 20th century Maccabees-themed menorah.
One of the museum’s neighbors has been closely following the reluctant disposal of tapestries, utensils and watches.
Other highlights include silver Torah shields from the 18th century, which are among the finest examples in existence today.
The news comes following the head of Germany's domestic security agency warning of rising levels of antisemitism in the country.
The specimen is unusual because it is so complete: around 70% of the bones are present, and they were found aligned with each other, making it easier to reconnect them during the restoration process.
Mined by Russian diamond producer Alrosa, the 14.83-carat diamond was cut from the largest pink crystal ever found in Russia, Sotheby's said.