We hunted, we searched, and we finally found it! This primary set is essential for any Pyrex collector. This collection was made in the 1950's and was one of the most popular lines that Pyrex ever produced.
Measurements in diameter are as follows:
Yellow - 10 1/4 inches
Green - 8 3/4 inches
Red - 7 1/4 inches
Blue - 5 3/4 inches
None of the bowls have chips or cracks. There are some small fleabites on the blue and green ones though. All the bowls do have surface wear consistent with age but are in great pre-owned condition.