But then, I got a surprise.
The asa no ha obi I talked about earlier arrived on Saturday. I only just got the chance to open it up and air it out. The smell of mothballs can be powerful, but it's a common scent in Japan where clothing is in real danger of damage from invading insects. I unfolded the obi to hang it up and... it's double-sided! A chuya obi!
(Sorry about the lighting, but this shows the most accurate versions of the colour...)
Now, to find someplace to wear it...