This is a vintage Maru obi
with spiny lobster on "Nanten" (nandina) pattern, which is woven.
The vivid pattern glows very well on the almost black dark purple color background.
Textile is exquisite soft silk.
It is relatively short.(12'10"/392cm)
The pattern is designed up side down to be tied with hikinuki knot style.
There are some spots where foils of the gold and silver threads have came off.(A)
There are small white mold(refer to the 3rd flaws photo), folding lines(refer to the 5th flaws photo).
For the details, please refer to the photos and figure.
Although it has such flaws, it is still in wearable condition.
Enjoy wearing the auspicious design.