I bought a a pair of new round mirrors from Classic Alfa.
Part CH001/1 - Door mirror; round style; wide base.
you can see them on their website

I removed my old chunky mirrors only to find the paint underneath the existing base was in bad shape. The new mirror base gasket won't cover this area completely and I am not prepared to re-paint the doors to install the mirrors.

These are brand new mirrors that were never installed on the car.
I paid close to $100 for the pair but will let them go for $85 including shipping (lower 48 states). I can't use them.