A glass ceiling light cover from the early 1900's (1920's?)   It mounts with a ceiling bracket with three chains through the three holes. The last photo shows another light fixture (Not this one) using this three hole chain. This is an early 1900's style.  If you are missing this brass light fixture it is not included here. We are selling only the glass. But we have these brass light fixtures in our other ebay listing.  The glass color is frosted.  We tried to capture the texture in the close up photos.    It's a 11 1/2 inches wide and 4 inches high.   It weighs just under 3 pounds.