There's is some wear around 1/6th of the ring gear (hence price), however it worked fine on the engine it was on. The clutch surface is in good condition.
Complete with a new set of clutch cover bolts.
£150 delivered.
Photos:

This photo shows the wear:

The rest of the ring-gear is fine:

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Contact Details:rich@lynxpowerengineering.co.uk
07732 822546