Knight Rider - SECONDS - Trautman
Smoother than Black Jack and much darker; you can pull it quite thin and still have a good, solid black stringer. Like most standard black boro glasses, Knight Rider is a dense black that likes an oxy environment, and can gray out a little with reduction. However, recent batcheshave been more resistant to the graying that is inherent to blue-based blacks.
Second quality glass can have the properties of odd quality glass, but may also have small stones, air bubbles, vary in tone/shade, or the shape can be very out of round. Second quality glass can provide a great value to the right person.