Vintage Henna Dyed Bone and Silver Tone Statement Cuff Bracelet

very large statement cuff bracelet made from, I believe, bone that has been dyed with henna to create a very organic piece of jewelry with a maroon / burgundy colour features silver tone metal findings (may be sterling, but I can't find any markings) I believe this to be an antique, certainly vintage the closure is a pin that pulls out to release the hinge and it functions perfectly as does the hinge condition: ~ there is a very clean hole drilled through the bone near the hinge which may be intentional (pictured) ~ there is a spot that looks like the burgundy colour was washed away (pictured) ~ the silver metal is quite patina-ed overall condition is good approximate measurements: ~ inside diameter when closed is 2.58" ~ outside diameter when closed is 3.37" ~ bone thickness is 0.44" ~ width of bracelet is 1.79"