I think this is a later version of Galli Criterium.
In terms of the variables that seem to define Galli models, this example has:
- an Allen-key hanger bolt,
- a b-knuckle with a small reinforcing 'gusset' under the cable outer stop,
- an outer parallelogram plate with a rounded area of 'small dots' around the logo, and a high-mounted cable clamp arm, giving a high actuation ratio,
- a curvaceous pulley cage,
- Simplex pulley wheels,
- an hex-head cable clamp bolt.
- Derailleur brands: Galli
- Country: Italy
- Date of introduction: 1980?
- Date of this example: unknown
- Model no.: unknown
- Weight: 193g
- Maximum cog: 26 teeth (Sutherland’s 4th edition)
- Total capacity: 20 teeth (Sutherland’s 4th edition)
- Pulley centre to centre: 45mm
- Index compatibility: friction
- Chain width: 3/32”
- Logic: top normal
- B pivot: unsprung
- P pivot: sprung
- Materials: aluminum
