Vintage Reverse Glass Portrait of Woman in Green color form an early American tin toy

an early American tin toy maker based in NYC

It appears to be signed Walker at lower right

given a terrific reactive blue-purple glaze

but it's 7 inches long

I know they were found at an estate in South Carolina

Vintage Reverse Glass Portrait of Woman in Green color form an early American tin toyBased on the signature at lower left, I believe this reverse glass portrait was done by a kid names Aslam but I find her rather transcendent, and fabulously intense! To my eye, each element tilted head, ice blue eyes, matte cream skin, darker triangle nose, jet black hair, blood red lips, bright green shirt is just right, adding up to a portrait of a woman who seems to see straight into one's soul! (Also a bit as if composed in a Mr. Potato Head sort