Thanks John loaded with swirls and bubbles very uncontrolled, bubbles are very tiny to 1 1/2' across, you can feel the swirls on the outside, base is ground, the hardware is older, the socket and harp and are most defiantly an add or retrofit, the threads do not match up at all, a set screw is needed. Most of the glass lamps without bases seem to come out of Italy, lamps measure 9" high X 8" wide regards Joe.