VIDEO: 1955 Film of Cutting Open of the Copper Scroll. Posted by the Leverhulme International Network Project for the Study of Dispersed Qumran Cave Artefacts and Archival Sources, courtesy of Judy Brown, John Allegro's daughter. Seen on Facebook etc.
For clarification (the accompanying text is a bit confusing), the original film is 1 minute 21 seconds long.
For past PaleoJudaica posts on the Copper Scroll, start here and follow the many links back.