Only the 3rd and 4th I have seen! I recently got one, except in a dinky bakelite holder with handle, and metal spring clips to hold it firmly in place. Has the proper Orlak logo impressed on the base of the holder, which now confirms my suspicions that the tumbler is definitely, 100% Chance (prev. a little doubt in my mind, as mentioned in the book).
These tumblers are quite light and thin, mould-blown affairs, so it is amazing that any survived from the early 1930s! Possibly made in Hysil (borosilicate glass) although I have no way of telling for certain. Put a bunsen burner under one to find out?
