This came by way of a misc box lot auction purchase. Too bad it's busted.

Any help on who made it. There is a signature but I'm baffled. Thought it was 'Toucharm' but searching the web didn't turn up anything. Not sure if the signature is the maker, decorator, or what? It's just under 4" across.
I think it's evident the blue is a layer of glass that's been taken away. I believe it's acid etched to this relief. Would you call this cameo? It's not as pretty as some of the E. Galle cameo glass but I figure it's derivative work, probably French art nouveau.
All comments welcome. .... Oh, and again
