3 1/4" tall, 2 1/2" across the widest point. Deep colored Brookfield embossed with no numbers or other markings from the1800's. The glass is blown with air bubbles present within the glass, swirls related to being hand blow. Rare old model insulator that does have bottom rim chips with one running up the side slightly, also there is a small stable fracture on the bottom side stemming from a chip. There is rough spots in a spot or two which were made in the glass making process. Please review the photos for details