This float has a Spindle ... well, it's an 'almost spindle'.  The thick glass drip almost touches the side of the float but not quite.  It's very, very close to touching the side.

The appendage is almost 2 inches long and is between 1/4 - 3/8 inches thick.

The end of the drip appears to be cleanly snipped off but it's hard to imagine how this could have happened.  The origin of the type of spindle remains a mystery.

This 4 inch float is also quite heavy for it's size.

Found on Hokkaido Island, Japan.