These two scans are of a catalogue published in 1910, by L. Aubery of Paris - which I take to be a bicycle shop. The scans were sent to me by a correspondent - so I do not know too much about the original document.

The second scan has a particularly fine image of a Boizot 2 speed derailleur. I think that the text relating to this image is: “2-speed direct drive spaced by choice, 25% to 45%. Immediate installation on any machine without changing the hub”

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• Publisher: Aubery
• Country: France
• Date: 1910
• Derailleur brands: Boizot
• Derailleurs: Boizot 2 speed