SQUARE CARAMEL BAKELITE BANGLE - WOOD CORNERS. Dee Battle and Alayne Lesser feature this bangle on page 49 of their book, "The Best of Bakelite and Other Plastic Jewelry" (published 1996). Their Price Guide lists it as high as $725.
Bangle is 5/8" wide with an inside cut-out diameter of 2-7/8". Bracelet is 3" square.
Circa: Late 1920s - Early 1930s