I looked all over the net and in all my kovel and kitchen price guide books. Nothing! The only thing I could find was something simuliar on E-Bay with wire going around it but not as cute as your’s The reason I think it’s from the 30 or 40ties is I just can’t imagine it being used on old cast iron or wood stoves. You know it was made in France, I don’t think where should make any difference. If it were mine I would put a price of at least $80.00, alway’s come down a little. It is rare, any chip’s etc.? Older kitchen items are very collectable. I know other antique people watch this site. Help out if you can.. I also think it is ceramic more than porcelian. Sorry, Have a very Merry xmas and a better and prosperous New Year Everybody.