Vintage 1940's tubular wax condenser capacitor by Aerovox, made in New Bedford, Mass. 2 1/2 inches long (not including protruding wires at both ends), and 1 1/4 inches across. Vintage beeswax used to close both ends. Also says H-201 on label. Not sure if this works or not but it's an amazing piece of genuine 1940 equipment.