Extremely Rare Vintage Celluloid Baker's Man Pie retailer Vent Baking Tool/Gadget Collectible

rare celluloid pie vent.
bakers man.
portly baker holding a rolling pin, in his baker's hat and apron.
cream colored celluloid.
vented bottom, has a chip on the bottom on one side.
vent *AS IS* inside shows vintage patina from use and age, unscrews and is removeable for cleaning,
it has 10 small vent holes and a flipper inside this piece.
does have a patent # inside, no maker's marks.
not sure if it still works, more retailer an extremely rare kitchen/baking collectible.