Medallion But Not Metal

The three main ground-floor rooms all have plaster ceiling medallions on them. These would have once graced the gaslight fixtures in the rooms, but now they dress up the electric chandeliers.

All three are different, but you wouldn't know it at first glance. They all appear more or less the same, but differ in the details. They're painted solid white, but almost everything downstairs was at one point. I wonder if they were once brightly colored. It's tempting to scrape off a bit of the paint to see what's underneath. Or just jump in and start repainting them.

The medallions appear to be quite old, and are probably original to the house. If you look closely, this one says "PATD NOV 15 1870" That would have been 23 years before this house was built.