Welcome, it would be nice to hear about vaseline glass production in Japan.
I (Ritsuo) is a manager of the Japan Uranium Glass Collectors Club.
I am glad that you are interested in vaseline glass production in Japan.
Several years ago, the Vaseline glass Museum opened in Japan.
I guess this is the only one museum in the world, which exhibits vaseline glass only.
Its formal name is the Fairlywood Glass Museum.
(Uranium reminds the atomic bomb for most Japanese, and they do not use
the name of Uranium glass museum.)
They are not only showing vaseline glasses, but also they are producing new
vaseline glass using the uranium mine near the Museum.
You can buy them in the museum shop. http://kanko.town.kagamino.lg.jp/fairywood%20english%20ver/