I'm not exactly sure what this old green glass globe fits, but it's some kind of cover for a light or bulb, possibly a small lantern or signal light. It's 3" high by 2" diameter inside. The dark green glass is slightly ribbed on the inside, the glass is wavy. The bottom is threaded to screw onto, or into something. A wire loop is attached to the groove inside with five extending loop hooks. The globe is in good condition with no chips or cracks.