This Yellow Bowl has been orphaned from its original Color Bowl Set. The iconic 4 bowl primary colored set was manufactured starting in the 1940's and its vintage style is still very popular today. It seems to becoming harder and harder to come by as it has been out of production for decades. This particular bowl is marked "PYREX T.M. REG. U.S. PATENT OFF." on bottom. It is the #404, 4 quart size and has a 10 inch diameter. It is used and is showing signs of being well loved. There are no cracks, but a tiny flea bite on bowl rim along with a couple of rough spots which are very small but can be felt when running a finger along the edge. The exterior color is quite good for its age and it still has a shiny finish. The inside is not as white as a new bowl would look. It has the usual scuffs and scratches from use both on the inside and out. This is a great mixing bowl and would also make a unique candy bowl for trick or treat. We've paired it with a pumpkin patterned hand knit dish cloth (100% cotton) as a reminder to always hand wash vintage Pyrex!