A yegg is a slang term for someone who breaks open safes, or more generally, a burglar.
The Yegg and the Eggs - 1914 was released on: USA: 12 March 1914
John Yegg - 2013 was released on: USA: 2 November 2013
The cast of John Yegg - 2013 includes: Jonathan Grebe as Milo Novak Dashiell Hillman as John Yegg Li Sadler as Chinese Woman
The Egg-Yegg - 1944 is rated/received certificates of: USA:Approved USA:Passed (National Board of Review)
Capture of the 'Yegg' Bank Burglars - 1904 was released on: USA: September 1904
Case of the Cold Storage Yegg - 1963 is rated/received certificates of: USA:Approved (PCA #20008)
The cast of Case of the Cold Storage Yegg - 1963 includes: Dal McKennon as Inspector Willoughby
The Egg-Yegg - 1944 was released on: USA: 8 December 1944 USA: 22 February 1954 (re-release)
In the sense of "thief, burglar," especially "safecracker," 1903, underworld slang, of unknown origin, said to be from John Yegg, a Swedish tramp, or from German Jäger "huntsman."
Batman - 1966 The Yegg Foes in Gotham 2-14 was released on: USA: 20 October 1966
Big Town - 1950 The Youngest Yegg 3-1 was released on: USA: 2 October 1952
A safecracker is also commonly known as a "safe technician" or a "safe manipulator."