French 19th Century Reversal Image, Which is My Portrait? organic 8" long x 2 3/4"

8" long x 2 3/4" deep x 1 3/8" tall

with one dark spot as documented in photos

There is no inset on the back

I'd love to see these put to good use

French 19th Century Reversal Image, Which is My Portrait? organic 8" long x 2 3/4"What a curiosity! I was pretty excited to find this little antique French reversal drawing, which I believe dates to the 1840s or so, when optical illusions because a big thing in France (check out the phnakisticopes published by Joseph Plateau) and reversal portraits were circulated. (I'm including one by Daumier in the photos) This one has a very contemporary feel to me, perhaps in part because the human face keeps reminding me of the late great