An exhibit celebrating the centennial of the National Freedom Revolution opened at the National Museum on Tuesday.

The National Museum, the Archive General Office, and the National Committee for Observing the National Freedom Revolution’s Centennial jointly organized the exhibit.

More than 80 rare and historic items are on display, including a 1911 state flag of the Mongolian Empire, seals of the empire and various ministries, documents, and personal effects of the revolutionaries.

The exhibit will run until December 29.