The Henry Model 1809 Contract flintlock pistol disappeared from a display case that hadn't been properly secured to a wall of the Canadian War Museum in Ottawa, the Canadian Broadcasting Corp., reported.
Museum director Joe Geurts said police were working through interviewing about 150 employees and contractors, and issued an appeal for the gun to be returned.
He estimated the pistol's worth to be $5,000.
In the meantime, new wireless security devices are being installed in the run-up to the museum's scheduled grand opening May 7.
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