Items (in 3 slip cases) re the variable speed driving gear invented by Telford C. Field for bicycles
- Made:
- circa 1899
[Items (in 3 slip cases) re the variable speed driving gear invented by Telford C. Field for bicycles etc. ca.1899. Comprise British and French patent material, photograph, and publicity brochure re Planet 2-speed gear. Field, of Southampton, was a naval architect]
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