Vintage Articulated Green Toy Snake 19th century math but I can't quite make

but I can't quite make out the last name

Part of what I think makes it great is the darkness of the photograph

o real matter

23 1/4 long x 2 3/4" wide and 1 3/4" deep

Framed: 4 5/8" x 3 7/8"

Vintage Articulated Green Toy Snake 19th century math but I can't quite makeJust for fun. One sees there around from time to time, I think probably made in Japan 1950s 60s, but I do think the design is pretty brilliant, with the individually cast plaster composition connected via a cloth ribbon that runs the span of the snake and sticks out at the tail. A pretty good, perfectly imperfectly painted face too, with drippy red mouth and yellow around the black eye balls. 15 5 8" long and in very good condition.