细节
A 'Cryptographe' Cipher Machine
Henri Bréant, 1870
The machine-tooled brass disc with two turning mechanisms for blued steel index pointer and 70 character cipher dial in original fitted box with engraved brass monogram of an 'L' under a crown; with original printed instructions, cut, mounted on linen and folded under fitted compartment
10 in. (26 cm.) wide in case