One Antique Greek Key Etched Glass Gas Light Lamp Shades. This lovely, thin glass shade is 4-1/4" tall x 7-1/2" dia., the fitter end is 4" dia. outside dimension and 3-3/8" dia. inside the collar. It has some bubbles in the glass and minor chipping at the fitter edge. There are some minor imperfections in the acid etch otherwise it is in excellent used condition.