Kitchen scene -- she's doing the dishes, he's sitting at the table.

The orange Tupperware bowl she's using (the one with the crinkly, sunburst pattern)wasn't produced by Tupperware until the mid-to-late 1970's. (I know. I used to sell that stuff!)

The next time-frame shown in the film was around 1956. All Tupperware bowls at that time used the round "seals".

There's NO WAY that orange bowl (which came in a set with a larger yellow one and a smaller green one)was around in the mid 1950's.

Somebody goofed!