Interesting ashtray that shows three locations: 1) Water Works in Columbus OH, 2) Last National Bank: A Sociable Eatery in Cincinnati OH and Hartford CT, and 3) Air Affair in Vancouver, British Columbia. Bright blue and white matchbook has never been used. Research indicates all three restaurants were active in the mid to late 1970's.  Water Works boasted come and  "dine in our bathtubs".  Ashtray is clear and free of chips.  Measures 3.25" diam