Nope it is a antique fishing float not for a tiolet
, The use of the first glass fishing floats can be traced as far back as 1840. The Norwegians used a float on which they tied a fishing line and a hook. As the use of nets increased, Norway went on to produce many sizes of floats since glass was an economical method of supporting the nets and offered plenty of buoyancy. Many European countries soon began using glass floats. Trademarks or embossing began appearing on the floats to identify the users and manufacturers of the floats.
Around 1910, far eastern countries, primarily Japan began manufacturing and using glass floats, hence their most popular name; Japanese Glass Fishing Floats. To accommodate different fishing styles and nets, the Japanese experimented with many different shapes & sizes of floats, from as small as 2 inches in diameter to the gigantic size of 20 inches in diameter.
Value $5.00 more for cranberry & jeweled colors $100.00
They also made them in various shapes like this one trying to keep them from slipping out of nets.