 FACT: At the end of the following episodes, "Wanna Bet?" and "That  Old Gang of Mine". The roman numeral of the year 1979 at the end of  the credits, was MCMLXXVIX. There was confusion of that because, the  "V" shouldve been removed. The remaining first season episodes were  finalized as MCMLXXIX, which was 1979 when the "V" was deleted.