4 of my bags came with mirrors:
1. Ebano (old) Montaigne
2. Ink large belly veneta
3. Red envelope-looking clutch (not sure what the actual color is)
4. Petal cross body (like the black one that Cameron Diaz is shown carrying in the celeb thread)
The cabat, knot and another cross body bag of mine did not. Hopefully this will help build up a reference?
I actually do use mine sometimes. Surprisingly, I use the ebano one the least, even though I've owned it the longest, and the corners and edges have become very worn, just from sitting in the inner zipped compartment.