Paull's No.0 hot blast circa 1940. This most plentiful model, with the compass rose look on the top of the fount, (although the points are not at right-angles) was most likely made sometime between the art deco craze started by Dietz in 1936 and the end of Wheeling Stamping in 1946. There were two previous versions, with plain top founts, that were produced circa 1920-1936 when they stopped calling it the No.1 Leader and changed the name to plain No.0. Those previous versions also had the bakelite plastic fill cap. The No.0 globe in this lantern looks good, but belongs in a pre-1920 lantern. Every Paull's hot blast that I have ever seen has the 1890 and 1903 patents on the lid, which begs the question of: what ever happened to the lanterns made by Wheeling between 1897 and 1903? Their patented true hot lift, with the lift hinged on the front of the globe plate, was Paull's most elegant and enduring feature.