Antique c.1790-1800 2 French Portrait Miniature Sisters in Superb 18k Gold Locket Frame 2.5" Plus Bale Museum But I've never seen anything

But I've never seen anything like this

1 mother-of-pearl lead case and 1 mother-of-pearl ruler

"The Cabinet Dictionary" (1803) of engraved designs and the "Cabinet Maker's & Upholsterer's Drawing Book" (1791) of furniture patterns exemplify this style

a single sterling silver with 18k gold (vermeil) coating liquor flask like that one

No chips or damage to the inkwells that I can see

Antique c.1790-1800 2 French Portrait Miniature Sisters in Superb 18k Gold Locket Frame 2.5" Plus Bale Museum But I've never seen anythingA gold test affirms the pristine large locket type frame to be 18k gold. I would expect to find a French gold mark, tiny as they are, but it might be on the inner lip of this oyster shaped double sided old treasure, and it's not wanting to easily separate to open for me for additional exploration of the pendant, nor to allow more clear photos of these 2 magnificent portraits. I hesitate to pry, not wanting to leave a mark on the gold. It is sometimes