Hobbs & Co.
Hobbs Hart & Co.

The
Parautoptics and other change key locks.

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ID:	7287 Click image for larger version. 

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M00076 - Hobbs made but to the Day & Newall design. 6 lever, 203 x 159mm.
M00079 - First production (sn:600) version with the Hobbs protector, anti-pressure, patent. Dated: 1863.