This Purple colored float has the Kita 北 mark which is classified as WP #2.
These brightly colored Hokuyo floats are almost always reproductions made in the 1960's for the tourist trade.
The FF stamp on this float is a bit unusual in that it's not the typical bold font but it has the 'pencil thin' lettering style.
It does show some signs of use and there's a small chip on the seal button.