A recent purchase included a BTH M1-AX4 (c1930s). This is somewhat taller
and skinnier than the normal M1 is anticlock from drive end and has a lovely
fat spark. It also has fittings for cable-operated variable adv/retard
I had thought it to be for a Crossley lump but it seems not. Anyone know
what it fits??
Reply to
Roland and Celia Craven
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