This listing is for a vintage paper advertisement. This is a 1991 ad for a Pittsburgh Corning PC Glassblock! The size of the ad is approximately 8x11inches. The caption for this ad is 'You can create dramatic glass block windows' The ad is in good overall condition, with some wear including a 2-inch crease in the upper left. This vintage ad would look great framed and displayed! Add it to your collection today!