Extremely rare True Mini Jumbo with a maker's mark.

To my knowledge, this is one of only a few True Mini Jumbos in collections that has a mark.  In this case, it's the only one with the mark is WP #130; Sa サ in a triangular configuration. 

(The other True Mini Jumbo I saw with a mark had a simple roof mark. It was light blue in color)

This blue-green roller is a working float with a few small chips around the seal like you'd expect to see.

I purchased this float in Japan in early 2023.