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Author Topic: Mark Series Gearbox Numbers  (Read 303 times)

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Offline essexbob

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  • Location: Essex, UK
Mark Series Gearbox Numbers
« on: 18 Dec 2023 at 09:31 »
I notice that quite a few Mark series gearbox numbers have a "B/" prefix.  Does anyone know the significance of this?  Maybe some sort of factory repair or modification?  Thanks, Bob
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