Timoni West is a web designer in San Francisco.
This is her blog.

Cover of Maurice Vlaminck’s Poèmes & Bois Gravès. Paris, Editions de la Galerie Simon, (1921), via Bromer Booksellers.

“This binding, apparently made of a polycarbonate, features a kinetic design, both covers consisting of eleven interlocking gear wheels, variously colored with auto paint, housed within a multi-colored frame which has been fashioned into an intrictate pattern of grids and circles. At either fore-edge is a small notch exposing the edge of one of the gears. A turn of this wheel sets all the gears turning in unison, their various colors in motion behind the complicated pattern of the frame, for an almost dizzying effect. The boards are fastened to the spine with metal hinges so that the covers move freely and the gears are easy to manipulate.”

Can be yours for a mere $20,000. They also have a copy of Gill’s Four Gospels and some Golden Cockerel stuff, all of which I covet.

1952, binding illustration for Astronomie v Československu od dob nejstarších do dneška by Hubert Slouka and others, A Journey Round My Skull: Slovakian Expose Redux

This thumbnail came up in a search for “tight back binding”. Apparently it’s student work from Standford. You can see it in this PDF, but the referring page is down, unfortunately. I’d love to see more photos. Looks amazing.