Offerman calls Hilda a "yenta," which is he says is a "matchmaker." However, in reality a Jewish matchmaker is called a shadchan. The origin of this error is the 1964 musical Fiddler on the Roof, in which a character named Yente serves as the matchmaker for the village of Anatevka.
In the profile view of the violinist playing Hava Nagila, in addition to the violin being played on the wrong side of the bridge, the bridge itself has also been incorrectly placed far too close to the fingerboard. The bridge is normally centered between the two f-holes, aligned to the notches in the "f"
When the orchestra is playing at the concentration camp, the violinist strikes the bow behind the bridge that supports the strings. This creates only a screeching noise, not the tones that are heard.
In the beginning of Ep 2 the man playing the violin is stroking on the wrong side of the bridge. Which is oddly far to close to the fingerboard. Playing a violin like this would make a godawful high pitched noise, nothing more. So all completely wrong.
This should be a big no no to the prop department.
At the end of Biff Simpson's TV interview at about 15:45, the camera pulls back to reveal the studio production equipment including a Leader waveform monitor and vectorscope that weren't introduced until around 2000.
When the bat mitzvah girl asks Meyer to light her sixth candle, there are already six candles burning on the cake because before, she called Mindy & Murray together but they both lit a candle each. So Meyer's is the seventh.
Holstedder speaks German with an extremely thick American accent on top of his lines being poorly translated from English.