PYREX 1940's Primary Color Mixing Bowl Set RARE THICKER BOWLS

Rare Pyrex Primary Color Mixing Bowls from the 1940's The bowls are thicker and here's some information: There were some variations in the primary color set throughout the years. The older sets from the 1940's were not numbered on the bottom. The markings on the bottoms of the "non numbered" bowls are only "T.M. REG." in an arch above the horizontal Pyrex in the middle and "U.S. PAT. OFF." in a upward arch below the Pyrex. Condition: The bowls have scratches on the outside and inside. The blue bowl has the least. These came out of an estate and I'm shipping them exactly as I purchased them so they will need some cleaning. Your item will be packaged with care. Thank you!