"The techs discovered that German locks were particularly difficult" - Robert Wallace, H. Keith Melton w. Henry R. Schlesinger, Spycraft: The secret history of the CIA's spytechs from communism to Al-Qaeda (New York: Dutton, 2008), p. 210
Other than telling you the brand name etc.. we cannot tell you anymore since this is a Disk Lock "High Security lock". Yes it is very big and i will have a search for you on that lock and see what i can get mate.
Yes, Atrix is correct. The company ( or at least the supplier ) is called Chaz, they have an outlet in St. Petersburg. They are an Abloy copy. There are also rim lock cylinders like this and other assorted items. Same number of cuts as abloy ( if I remember correctly ) and they have a preference for steel keyblanks.
