In general going by brochures to young riders reports factory Commando didn't have signals nor two mirrors up to the '72 Combat Bombs delivered to USA. Yet both my Combats came with wiring to work signals as well as police accessories. So bikes could be delivered or configured either way.
My first Combat-pre Peel, vendor or an past owner put on signals. I got 1st one from the son of the shop owner that sold it new. Now a small engine shop, so might be able to ask the daddy what he remembers. Trixie, from New Orleans, came sans indicators nor RH mirror but good points ignition still working nicer than any Boyer can. Trixie and Peel both get RH mirrors in brake lever pivot for city traffic views.
Problem with factory signals are many but mainly that the return earth goes through the chrome layer on plastic shell then chrome stalks into head lamp shell. Folks who hit the ground sideways too regularly tend to put the shorter stalks on both ends.