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By John L
#80420
S.634/L is a 70 mph (i.e. marked to 70) 'D' shaped head - NO trip. I don't think 'D' shape heads ever had a trip feature.... but I could be wrong, of course. Last one of the correct type sold on everyone's favourite online auction site in June last - for just £103.79 + p.&p. !!

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