When Finn and Talia are at the airport they stop in front of a window with a Boeing 747 behind them. The 747 didn't start commercial service until January of 1970 and would not have been at the airport in the late 1960's.
Events within take place in late December 1969 (the following week takes place on New Year's Eve). A reporter is playing Black Sabbath's 1st album, which wasn't released until February of 1970.