vintage wide silk ribbon Japanese obi sash belt, black w/ gold flowers reversible fabric

Vintage silk ribbon from Japan, 20th century. This is 7" wide x 80+ long, probably a kimono sash, I think. It's smooth and supple without brittleness, no fabric wear though does have a few spots (more visible on the gold side), and 'rusty' streaks in the black. Beautiful colors and pattern, this is truly exquisite.