The first thing this mirror needed was a good cleaning! It seems there was 100 years of dirt collected in the frame. Some mineral spirits, a soft scrub brush, some rags and a little patience, and it cleaned up nicely. Next, there was a piece in the corner that had been badly damaged, but nothing a little wood, some wood glue and wood putty couldn't fix.
Once it was cleaned and dry, I applied a coat of Annie Sloan Chalk Paint® in Florence. Then I rubbed some Napoleonic Blue into the grooves to bring out the texture. Next, I wiped some of the Napoleonic blue off the high ridges to bring out the Florence color some more. Then I decided it needed some sparkle, and lightly "distressed it" by rubbing some metallic antique gold over a few ridges to add interest.