I am going to break with Collective tradition and not post any photos with this entry- everyone knows what the primary bowl set looks like, but I have a couple of questions - hopefully, someone out there can help me. I have 3 bowls which I believe to be from the primary set - the 404 yellow I got from my Mother, I remember it from the late 60's, it reads 404, 4 qt, Trade Mark, 16, Pyrex, R, Made in U.S.A. Oven Ware.
Yesterday I found the red 402 bowl at VV - perfect condition, $2.99, it reads 402, 1 1/2 qt, Trade Mark, 8, Pyrex, R, Made in U.S.A. Ovenware(this is one word, on yellow it was two words). The blue bowl is really where my question lies - I got it in the fall at VV - the bottom reads 401, Pyrex, R, 14 and this has a circle around it - that's it nothing more - I am wondering if this bowl could be from an older primary set? Anyone know??