Beautiful Old Hand-forged Iron Ring wooden bird I'm not sure the source

I'm not sure the source of this antique bookplate

5 1/8" long x 2 5/8" tall x 1 5/8" wide

where she studied under Mexican muralist Rufino Tamayo and the abstract expressionist Vaclav Vytlacil

then on the bottom of the box on Feb 22

Beautiful Old Hand-forged Iron Ring wooden bird I'm not sure the sourceI believe this old hand forged iron ring might have been part of a yoke or harness, and maybe used for hitching. I just think it's a beautiful, sculptural thing, which could be used as a hanger for something now, or just set somewhere as interesting object, with this great rusty surface. I wouldn''t have thunk it, but here I am getting rather obsessed with rusty old iron things! 5 3 8" ; x 2" w x 2 3 8" d. Surface aging as evident, all to the good I