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Help to identify an Ossa crank

CC69
in OSSA

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Can anyone help to identify this crank which was in a box of Ossa MAR bits.  Seems different and a lot smaller to the MAR & TR I've got. 

Any info appreciated. 

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    Looks like a MK1 MAR but I've nno measurements to hand. The MK1 MAR (and other models) had a smaller crank than '74 onwards engines, so could be MK1

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    • Author

    Thanks Woody.  The other cranks I have  are a lot bigger & off MAR 76 Mk2 ? But i did have cases &, gears for 72 Pioneer so could from that. 

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