The crank and armature plate assy looks like typical 600cc stuff. (the plate were used on some 500 fishing motors too) The coils are of the old '60s design. The 600cc sport cranks have a little "+" etched on them.
Have you seen this old Volvo commercial? Seven minutes of 600cc, mainly from Rouen '75
http://www.penta.volvo.se/history/lo.../honken_T1.mov
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