On my car yes, small bulb is within headlight. Its a Cibie H4 but I've now idea if it's original or not. Also, the loom has been so chopped about, so although we have a wire for sidelight behind headlight no idea if that's original either until I take it out (we've a new loom as its been chopped over years and badly).
The Carello I've seen with sidelight / small bulbs use an H1 bulb and the small bulb fits into the metal bulb holder not the bowl. Alfa Montreal use same lights as do some Ferraris and probably other Italian stuff of same era.
My car has some features of German cars but not all!. Seems it's all a lottery as to what's on these originally!