1960 through the mid-1970s saw a few iterations of the "4-Quart Casserole with Cradle" featuring a 404 round bowl, the cover from a 3-quart round casserole and this cradle. First in 1960 with the "Golden Pine" promo. then a less frequently seen gold-on-tan "Hex Signs*" (1965), followed by an Early American version (1966), a Verde SP version (1971), and finally this Spring Blossom Green version through the early 1970s, the last four being offered through the Blue Chip stamp redemption program.
I'm a bit confused about this pattern, you are calling it spring blossom here (which I agree with), but the spring blossom you have listed doesn't have a white bowl (https://www.pyrexcollector.com/springblossom79.php) and the flowers are too small - they are more like the crazy daisy from correlle. I have a set of four nested spring blossom mixing bowls as confirmed by a box I saw at an antique store once: Two sets of mixingbowls, one set of cinderella bowls as well as the small casseroles - all that match this page's bowl's flowers. I came here because some of the bottoms are mis-marked (wrong size and/or missing digit on the 4xx number. Do you have information about that? and I'm curious as two what you think I might have.
The version in the link is Spring Blossom Green '79, and as noted is an update of the original 1972 version which featured a larger decoration and alternating opal and green base colors. The bowl in this casserole promo is from that original version. See: https://www.pyrexcollector.com/springblossom72.php
The Corelle pattern is also called Spring Blossom Green.
All Pyrex patterns: https://www.pyrexcollector.com/patternsbyname.php
thank you for the response I see now that there are two versions( '72 and'79).. Another question, do you happen to know what the little 2 digit number is that is below "trademark" and above the "PYREX" as seen on the 1950's logo https://www.pyrexcollector.com/dating.php? I can't find anything about that number..
Merely a mold number. A molding line consisted of several bottom halves moving on a conveyor, each being positioned to receive a blob of molten glass before a ram with the top half mold pressed it out to fill the cavity. A unique number for each bottom half would serve to identify which was responsible if some pieces had defects. The entire backstamp is actually on a cylindrical metal slug fixed in a well at the bottom of each bottom half, allowing for the information on it to be changed without having to make numerous complete new mold halves.
cool thanks!