Ok, that's a bit differend to what I'm used to seeing, When Victa moved to electronic ignition, they used the same coil, but replaced the points with a module that controlled the timing. I imagine with the Victa module, it operated by the pulse from the coil itself, as the magneto passed. It was certaily not close enough to the flywheel to sense the movement itself.
In recent years, this moudule has been moved, and is now cast inside the form of the coil, creating a square plastic lump. i have also seen this with a number of brushcutter coils, thoug i imagine some of them would also use the system you are describing with briggs.
I could specuilate that the victa version is cheaper, as it seems to be adopted more widly by manufacturers as they move to China, however, the above engine pre-dates Rovers move to china i think, so that would not reflect on it.
I'm getting really curios now, so tonight I will try and check under mine, hopefully what i see there is the same, and i can pull it off and get some good shots and any markings noted, and post them up.
