CD 151 H.G.CO. 1000s of bubbles Embossed on the (F-Skirt) H.G.CO./ PATd MAY 2 1893 (R-skirt) PETTICOAT. This insulator has sharp drip points on both the inner and outer skirts with one drip on the inner skirt that is damaged. The glass has some black stuff I think may be carbon floating in it, as well as at least a 1000 of small bubbles ( no I did not count them) No other issues with this beauty. Another great buy at only… $25.00… plus postage, Insurance is optional/extra). Buy with confidence! We do not sell altered insulators.