Nice deep cobalt blue colored seal on a small netted float.

This float is stamped with WP #171 'Asahi' 旭.  It's the mirrored version of this mark with two 旭 symbols.  Very nice embossing of this stamp that shows all points of mark WP #171.

Found on Hokkaido Island in northern Japan.

This stamp is mark WP #232 'Maru To' ㊉ which is an encircled 'To' 十 symbol.  Basically, it's a cross within a circle.  It's been classified as uncommon.

This netted float measures about 5 inches in diameter.

Found on Hokkaido Island in northern Japan.

Here's a nice example of a roller with barnacles.

It's a standard Hokkaido roller that's about 5 1/2 inches (without the barnacles on the ends).

This 5 inch float is stamped with 'Naka 中 under a Roof' mark.  The Naka 中 symbol is at 90 degree angle to the roof mark rather than vertical to the roof mark as depicted for WP #44 in Walt Pich's Marks book.  So, it's unclear if this is a new undocumented mark or not.

This looks like an older float and is nicely netted for displaying.

Found on Hokkaido Island, Japan.

This Blue Dot float has a nice deep cobalt blue seal.

It's stamped with WP #56, one of the roof series of marks.

It measures 2 1/2 inches in diameter.

Found on Hokkaido Island, Japan.

Amber Gold/Yellow colored authentic Japanese glass fishing float.

Stamped with WP #10 Rivermouth mark.

This float measures 2 1/2 inches in diameter.

Found on Hokkaido Island in northern Japan.

Dark color float that may be a dark steel blue color.  It's very shiny; not sure if this float was ever used.

The float has been pinched off to seal it.

This float measures 3 inches in diameter.

Excellent example of a Narrow Collar Jumbo Roller.

As the name implies, the collars (i.e. two grooves) on this type of jumbo roller are narrower than the other styles of jumbos.  It's the most easily identifiable characteristic of these floats.

The Narrow Collar Jumbos are presumed to be the oldest of all the jumbo rollers.  Most of them show heavy signs of use as working floats.

There's a dot in the middle of the non-seal end.

This float has an interesting provenance.  It was purportedly found near the mouth of the Umpqua River, Winchester Bay, Oregon USA.  It was found on Dec. 24th, 1930.  This float was hung in the Umpqua Lighthouse for many years.  When the lighthouse was remodeled, a very tenacious float collector obtained this float from the lighthouse.

This float has excellent provenance having come from the ex-Jim Watson collection.

Fantastic example of a Doughnut Jumbo Roller.

The name 'Doughnut' would seem to originate because of the broad width of the collars (i.e. two grooves) and the inflated doughnut shaped ears (i.e. knobs at the ends).

This Jumbo Roller is quite large measuring 20 inches in length and 8 inches in diameter.

Doughnut Jumbos are very rare and are highly collectible.

What makes this particular float really extraordinary is that it has a maker's mark on an ID seal.  The mark is WP #7 Se セ (also known as Otaru T).  It is a rather large bold rendering on the Se symbol; almost an inch wide.  I showed this Doughnut Jumbo to Walt Pich and he told me he couldn't remember seeing another Doughnut Jumbo with an ID seal on the non-seal button end stamped with a large Se symbol.  It's great knowing that this is such a special float!

It seems possible that this Doughnut Jumbo was produced in Otaru, Japan.

This float has excellent provenance having come from the ex-Jim Watson collection.

This is a perfectly formed Dot Mold Jumbo Roller.

The name 'Dot Mold' comes from the number of dots in the glass that are a result of vent holes in the mold used to produce these floats.  If you look close, you can see 2 dots on top of the barrel and 2 dots on the bottom.  There are also 2 single dots on the non-seal end.  So, that makes a total of 6 dots visible on this Dot Jumbo. 

The Dot Mold Jumbo is the rarest of the 4 main styles of Jumbo Rollers (only the Flat-Bottom Jumbo Roller is more rare with 3 examples known to exist).

It's also presumed that Dot Mold Jumbos are the newest style of the jumbo rollers.

This Dot Jumbo is a wonderful emerald green color.

It measures 19 inches long and the barrel of the float is 8 inches in diameter.

There are signs of use with a couple of chips on the seal.  It was purportedly found in Oregon, USA.

This undocumented mark is similar to WP #293 except it is NOT encircled.  The symbol is also much larger than what is typically seen in maker's mark WP #293.

This float measures 3 1/4 inches in diameter.

Found in northern Japan.

Gorgeous deep Cobalt Blue float with rare mark WP #188 'Chichi' 父.

There's also an inclusion of embedded kiln stone.

This float measures 3 1/4 inches in diameter.

I think this is an exceptional float.  It has an incredible deep blue color, a very rare maker's mark, an inclusion, tons bubbles, and a green eye nubbin.