This leaflet was supplied in the box with a Shimano Lark derailleur dating from around 1970. It does not appear to be a set of instructions - it appears to be sales material promoting Shimano products.

I note:

• That it appears to date from a time after the Shimano Archery design had died, but before the birth of the Shimano Crane design - as neither design is shown (see scan 3).
• It include 5 speed freewheels for 1/8” chain - rare beasts (see scan 2).
• The hydraulic brake system has already appeared (see scan 4).
• The telephone number, 07222 43 0333, ends in 333 (see scan 1). I had thought this kind of thing was a modern aberration - but clearly not.

• Publisher: Shimano
• Country: Japan
• Date: September 1970?
• Derailleur brands: Shimano
• Derailleurs: Shimano Lark, Shimano Sky Lark, Shimano Lark-W, Shimano Eagle