Date-eri (kimono collar accessory) - Sanpi - Wide collar type - Unused - Kasane-eri (layered collar)

This is a Date-eri (layered collar) that beautifully adorns the neckline of Japanese traditional wear.
It is unused, but has been stored for about 30 years, so the box is creased. Please view the photos carefully.
This is a product from the long-established brand Sanbi, made of vibrant orange pure silk with a woven pattern (Sayagata).