This auction is for an Antique Victorian White Opal Glass Double Knuckle Kerosene Oil Gas Electric Table Lamp Shade. The bottom measures 10" in diameter it's about 5-3/4" high and has an outside top diameter of 3" for clip type shade holders. It is in very good condition with no chips, cracks or repairs and has a fire polished bottom with a rough ground top. I am listing many more antique gas, electric, oil and kerosene, lighting fixtures, lamp shades, table lamps and parts in the coming weeks so keep checking me out. Buyers in the United States pay $19.99 shipping, insurance and delivery confirmation by USPS Priority Mail. Thanks for looking!!!