This beautiful set of bowls were made by Pyrex around the late 40's - early 50's. The sets came in an array of designs/patterns, as well as this set of Primary colors. They were a popular addition back in the day, and I'm sure many sets were given as wedding or Christmas gifts. Usually, one would not be able to find a set like this for the $15 price I paid for them. I let this set go for $54.99. Still a nice profit!