I love vintage mirrors - you can find such interesting shapes and I love the details on them. I have several at home and love the light they bring into the room. The grey mirror I painted in my hallway is always commented on and I get asked about once a month to sell it - it's not going to be sold but I always look for similar ones. Recently I found a very similar one and offered it to a client who has been asking me for one for around 18 months now.
I painted the mirror in ASCP Paris grey and then used a 50/50 mix of Pure White and Old White for the details and then used clear and dark waxes to create an antiqued effect. If you want to see a video on how to do this with dark wax you can find one here. Here is a detailed tutorial on the same effect.
I also found this unusually shaped mantle mirror - it is very old and has lots of patina and aging to the actual mirror. I painted it in a very pale grey and allowed the crevices to remain unpainted to show the pattern in the carvings.
This mirror is available for sale -
Solid carved timber
80w x 120h
(you could easy get the mirror replaced for around $100 but I like it the way it is)