The Dukes Of Hazzard | Season 4 | Episode 3 | (Diamonds In The Rough)

Episode aired October 23rd, 1981

Everyone's after a sack of diamonds that had accidentally been dropped from an armed robber's vehicle driving through Hazzard, and all roads lead to the Duke farm after Bo and Luke get to them first. While the Duke boys are trying to report their find to the state police, they are bugged by the original thief (who poses as a reporter to get at the loot) and later, by a phony FBI agent hired by a greedy Boss Hogg who wants the reward money for himself.

IMDb: https://www.imdb.com/title/tt0567150