I've got a new one as well that was supposed to replace the damaged one on the drivers side. Something is wrong with the alignment of the holes, I can put a nail or rivet, for example through it when not on the door mechanism but no chance when trying to fit it. I did think of trying to carefully re drill the holes but thought better of it ( ok too lazy)
I gave up on it and refitted the damaged one. It now sits in my spares box waiting until one of the existing handles gives up the ghost totally.
As for the door handle mechanism, the two on my 13/60 are the type where you can see the spring.