Kerosene Lamp Base???

I purchased this at a local junk shop and was intrigued by the glass and handpainting. I have no idea what it is though. It was suggested to me that it might be a base for a Kerosene Lamp, but know absolutely NOTHING about kerosene lamps. Any help to confirm this and/or possible age, maker, etc. would be greatly appreciated. It's hand painted floral motif with raised enamel dots over the painting. It is approximately 9 inches tall by 8 inches wide. The metal insert has holes in the bottom, the glass is open at the bottom also, so that rules out some sort of vase. Thanks for your help.