The clerk takes the condoms from the girls in his left hand and picks up the P.A. microphone in his right. It then cuts to a very brief shot of Dorothy then back to the clerk and the microphone is now in his left hand and the condoms have disappeared.
When Dorothy tries to force-feed the chocolate to Sophia, she is holding it in front of her mother's face just before Blanche walks in. It then cuts to a longer shot (as Blanche appears) and Dorothy is already putting the chocolate back in the box.
In the flashback scene in 1929 Sophia and company are driving to California via Chicago during a cold frigid winter. Yet when they enter the mechanics garage in Chicago it's clear that they've been driving with the cars top down. In the middle of winter they would of been driving with their top up.
The Saint Valentine's Day massacre occurred in February of 1929. The series established that Sophia was born around 1905 or 1906. Thus she would be anywhere between 22 to 24 years old at that time. The same would also apply for Sal. Yet both characters are portrayed by Estelle Getty and Sid Melton who were both in the early sixties. Younger actors in their twenties should of been portraying Sal and Sophia.
During the Saint Valentine's Day Massacre flashback, there is a grille shell from either a 1930 or 1931 Ford Model A hanging on the wall directly in front of their Model T touring sedan. This would be inaccurate, as the massacre occurred in February 1929.
In the beginning, Dorothy tries a piece of chocolate and mentions the piece having a red ring around the outside. Sophia says it was her lipstick. However, Dorothy is the one wearing red lipstick, not Sophia. She isn't even wearing any lipstick. ** It doesn't mean she was eating them that very second. It could have been some time before.
In the Valentine's Episode (Season 4) Julio Iglesias comes to pick Sophia up for a date. The crowd begins cheering loudly when he appears making it tough for the actors to deliver their lines. Knowing precisely when she will be able to speak Estelle Getty (Sophia) guides Iglesias through the kitchen and you can very clearly see and hear her say "NOW" letting him know it is time to continue.