This Optima is a positively deluxe copy of the 1949 Huret Competition, beautifully finished and branded - not exactly what you would normally associate with the DDR. The edges of the main plate have all been ground after stamping and the nuts and bolt heads are all chamfered correctly etc. This is possibly the best constructed and finished pull-chain derailleur that I have ever seen.

The dimensions are also positively racy, with the pivot about 65mm from the hub axle centre.

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• Derailleur brands: Optima
• Country: Germany - DDR at the time
• Date of introduction: 1955
• Date of this example: unknown
• Model no.: unknown
• Weight: 247g including an integral hanger plate
• Maximum cog: 24 teeth?
• Total capacity: 22 teeth?
• Pulley centre to centre: 47mm
• Index compatibility: friction
• Chain width: 1/8”
• Logic: low normal
• B pivot: none
• P pivot: sprung
• Materials: steel