Vintage Unsigned Selro Panel Bracelet Exquisite Filigree Metal w/ Green Glitter

Vintage Unsigned Selro Panel Bracelet Exquisite Filigree Metal w/ Green Glitter Very unique bracelet Metal filigree style band is 2 inches wide Acrylic bubble panel pieces with green interior - gold glitter & very strange white (with dark parts) cotton-like bits that look like tissue? I have looked up this bracelet & all these bracelets have the same look with the darkened bits - so that is the outcome of years of aging or the intentional look? 7.5 inches in length Actual age is unknown - could be 40-50 years.