I haven't fully dismantled and explored it, but I question the age of it, in spite of the fact that it does have some old repairs. Perhaps I will be able to determine if it is of period, with signs of age obscured due to the restorations, or, as I suspect, the product of some early 20th century manufacture.
The reverse painted panel is definitely not of the Federal period, but I don't know if was a replacement for an earlier one, or one created at the time of this mirror. It has a certain charm, but looks a bit "cottagey" for this formal style of mirror.
My plans are to do a couple minor touch-ups, and create a more appropriate eglomise panel.