Pyrex Cinderella 3-piece mixing bowl set that was available in the 1960s.
These colorless glass bowls do not have model numbers, but they do show the capacity on the bottom stamp. They are: 1-1/2 pint, 1-1/2 quart, and 3 quart. They are in very good condition with no chips or cracks. They are certainly very handy as they do have wear showing how useful they have been in their previous life. These are unique Pyrex bowls that I have never seen in the wild before and would be a swell addition to your Pyrex collection!