In 1969, student protesters destroyed a 2500-year-old Egyptian sarcophagus on display at the École des Beaux-Arts de Montreal.

For the last four decades the pieces of the coffin — eight large fragments and hundreds of smaller shards — have been in storage, but three months ago, conservators began the work of restoring it and the mummy it housed. The sarcophagus will be featured in a museum exhibit that opens in December, and will then be returned to the college, now part of the University of Quebec in Montreal.

Google and scholarly searches have turned up no information about the 1969 protest in which the sarcophagus was damaged, or about how the damage took place.