This is a flamboyant little number, with its logo dashed off in extravagant cursive script and its rear knuckle sporting a jaunty angle. I also have versions of this design that are unbranded and branded as Cristim.

Mechanically it is partly Shimano (see the cable clamp and adjustment screw placing) and partly not - it has only one sprung pivot.

I think that this is a late example of the genre. It's b-pivot bolt and p-pivot bolt have plainish hex heads, the adjustment screws have Phillips heads and the pulley bolts have pan heads.

• Derailleur brands: Centauros/Cristim
• Country: Brazil
• Date of introduction: 1986?
• Date of this example: unknown
• Model no.: unknown
• Weight: 231g excluding dropout bolt
• Maximum cog: 28 teeth?
• Total capacity: 28 teeth?
• Pulley centre to centre: 51mm
• Index compatibility: friction
• Chain width: 3/32”
• Logic: top normal
• B pivot: unsprung
• P pivot: sprung
• Materials: steel