Allegedly, the coil is the same as the Speeditwin.
Here’s my 1950 Speeditwin mag plate. The earlier coils may
have been the same as the circa 1940 Fleetwin, but this mag
doesn’t use the Bakelite insulators for the plug wire connections.
I wouldn’t be surprised though if this coil fit the early Fleetwins.
Prepare to be boarded!