I'm not a globe person either, but I bought the gasoline globe book, and it lists 2 types of 16.5" lenses. One is a milk glass cast lens (1920-1922) but it looks more red in the center than yours. The other looks just like yours and is dated from 1920-1934, rarity of 3, and valued at 800-1250, but that value is for a complete globe, not a single lens. hope this helps ya.
Interested in H. Earl Clack (heccolene), Litening, Arro, Laureleaf, Yale Oil, to name a few Montana brands.