My points 79 has two coils supposedly BMW but marked made in Brazil. they work fine though.
The '79 is a different design than the '83 that the original poster is talking about.
I have two separate (6v each, wired in series) coils, too. With the standard broken front coil mount (they were subject to breakage).
Unless the bike has been modified, a '78-'80 will have points ignition with two separate coils.
The '81-on bikes will have electronic ignition with one dual-output coil.