CD 133 B.G.M. Co. Baltimore Glass Manufacturing Co. Embossed on the (F-Skirt) B.G.M.Co. ( for the Baltimore Glass Manufacturing Co.) It has an open bubble defect on the rear base skirt. The color is a light purple and it should be noted that the height is 3 ¾ inches ---$165.00--- Plus postage. We ship to USA and Canada… Buy with confidence! … We do not sell altered insulators! PayPal, Money Order, or Cashier's Check. Check our other insulators to combine freight.