Space Saver casseroles debuted in the US in 1957 with a 548 shallow and a 575 deep version. This one, however, is a 2162 "deep oblong casserole" from the "Gaiety" range, first offered by UK Pyrex maker James A. Jobling & Co. in 1958, according to thatretropiece.com (@thatretropiece). Differences include the trademark and that the UK model and mold numbers are on the undersides of the dish handles. Lid handle tops are flat, not contoured like the US version. The decoration is also printed slightly lower on the JAJ version. Although tarnished, the stand appears unused, as does the dish.