This maker's mark is similar to WP #181 except that the mark is imprinted into the glass (as opposed to mark being raised above the glass).  I think this is an undocumented maker's mark. 

It's a netted 3 inch float that originated from Hokkaido Island, Japan.

WP #43 Nana 七 under a Roof is an uncommon mark.

This measures 2 1/4 inches in diameter.

Found on Hokkaido Island, Japan.

This is a unique float for several reasons:

1)  The WP #166 mark 'Sun' is usually found on 3", 5", and 8" floats

2)  This is a smaller version of the WP #166 maker's mark than I've seen before on 2 inch floats; it's only 1/4' wide and 1/2" tall

3)  The Lime or Mint Green color is distinctly unusual

4)  It's a crudely constructed float.  It's out-of-round, the top half of the float is very thick & heavy, and there are bits of grit caught in the glass

This float has excellent provenance having come from the ex-Col. Rich Richardson collection.

WP #61 is one of the marks in the roof series of marks.

This symbol that appears 'under the roof' in WP #61 resembles a zero with a line crossing through the middle of it. 

It's a bold stamp that's nicely beveled.

Really nice bold stamp of WP #53 'Gan' 元 under a Roof mark.  It's a rare maker's mark per Walt Pich's Marks book. 

This is a 3" float has a couple of chips on the sealing button.

The swirling in the glass and tons of bubbles adds character to this float. 

A great display float; I've got it in the front row.

This float has excellent provenance having come from the ex-Col. Rich Richardson collection.

Undocumented maker's mark 'DG in a Box' with a number '1' below it.  Similar to 'DG in a Box with A' but it has a '1' instead of the 'A' below the box. 

This float is 3 1/4 inches in diameter. 

It looks pretty worn and is mostly frosted. 

It was beachcombed in Alaska.

This float has 4 symbols on it's seal; one symbol in each of the four quadrants.  The four symbols are: A ア - Sa サ - Ha ハ - Ra ラ. 

This is an undocumented maker's mark. 

It also has a nice light green colored seal button. 

The float is 2 1/2 inches wide.

This float has excellent provenance having come from the ex-Deborah Hillman collection.

This is a large dark amber green swirl float.  The swirl has an almost brownish green tint. 

The float itself is just over 8 inches in diameter. 

It's one of my favorites because the swirl is so striking, you can see it across the room.

This extremely rare cast iron mold was used for producing 10 inch glass floats.  It was discovered in Wakkanai, a small fishing town in the far north of Hokkaido Island, Japan. 

It originated from a glass fishing float factory in Toyotomi Onsen where Mr. Maeda was part-owner in a factory with Asahara Glass Company in the early 1930's.  Toyotomi Onsen was chosen as the perfect place for melting glass, since it had a rich source of natural gas.  The joint venture moved to Wakkanai sometime later and eventually closed in the 1970's.  Glass floats made at the factory were sold to Wakkanai, Rebun Island, and Rishiri Island fisherman. 

The 10 inch glass float shown in the picture was produced at the Wakkanai factory and may have been blown in this exact same cast iron mold.  Mrs. Maeda kept this mold for many years until I was lucky enough to acquire it.  I think it's a fantastic part of float making history.

Yellow and Blue Swirls together makes this a very unique float. 

Clear bold stamp of WP #81 '2' maker's mark. 

This float measures 3 1/2 inches in diameter. 

It has tons of bubbles.

Found on Hokkaido Island, Japan.

Pretty good example of WP #234 Heaven mark.  This is an almost perfect stamp.

It's light green a 4 inch float.

Has excellent provenance having come from the ex-Ramon Fulton collection.

Daiichi Glass stamp 'DG A'.  Looks like the 'A' is slightly over the seal.  This is maker's mark WP #135. 

Gorgeous all blue float. 

Great example of net patterning, too.

This float measures 2 3/4 inches in diameter.