At first glance, one can make argument for this being a period oil painting of French King Louis XV. Not a dead-likeness, however, and so I suspect it
Antique c. 1700s Oil Painting Portrait Miniature on Metal, on Large Ivory Table Snuff Box, Louis XV
A tiny gem, perhaps all that remains to mark a life of this very distinguished gentleman who looks a great deal like French King Louis XVI, don't you
Fine Antique French Portrait Miniature, c.1700s, Gentleman in Powdered Wig
Tennessee Highlights
American Miniature Portrait of a Young Man c1825 (item #1369366)
Antique French Vernis Martin Vitrine Display Cabinet C1880 : AnticSwiss
The Color of Whiteness: Picturing Race on Ivory - Colonial Society of Massachusetts
diy – In the Vintage Kitchen: Where History Comes To Eat
portrait Of A Young Gentleman, Fine French Miniature, Ca.1795
Antique french miniature portrait - Gem
Fine Antique French Portrait Miniature, c.1700s, Gentleman in Powdered – Antiques & Uncommon Treasure