London Underground Shot Glass. Clear Glass with Blue and Red London Tube Transit System Logo. Small TFL Copyright with Reg User 04/ 4131 Marking under Main Illustration. Actual Shot Glass is about 2 1/4 inches tall and about 1 3/4 inches in diameter at Rim. I Find No Markings on the Bottom of the Glass. No Chips or Cracks. Please note the Blemishes on the lower Red Circle. Please see the Closeups.