OK, This one is tough. I’ll give some hints, but first here is the object:
Feel free to click on it and get a full size image.
This was found in a shop on one of the very shi-shi shopping streets in Waikiki. It was not for sale, it was a tool of the trade.
The shop sold a single type of item that varied in price from $350 to $1500. The proprietor was very proud of this thing, and explained that is was very rare and made by only one old family in Japan. Since it had a description of what it was clearly printed on it, I had to smear that out to make it a challenge! I left the manufacturers name visible just in case somebody is better or more persistent with a web search than I was…