It's quite hard to find a Cranberry Dot with mark WP #171 'Asahi' 旭.  In all the years I've been looking, I've found two of them.  This one has the best stamp of the two that I've got in my collection.

It's a nicely netted float that measures about 2 1/2 inches in diameter.

This float was purportedly found by Woody Woodward while float hunting in Japan with Walt Pich.  I purchased this float in 2023 from a private collector who had bought it many years ago on eBay from "2fishin2" (aka Woody).