VINTAGE Bristol Blue Glass Cup or Mug Thomas Webb England 4 1/4" Second Mark. Please see all of my pics. There is a lone S mark as you can see in the photos. The cup is clean and damage free. There are no chips, flakes, cracks, stains or damages that I see. Please contact me with questions and I will respond promptly. Multiple PURCHASES are always combined to save on shipping charges. Thanks for looking!