Sanford and Son (1972)

Season 1: Episode 12

While collecting junk, Lamont runs across an old suitcase and decides it could be worth something. However, once he gets it home, Fred makes a shocking discovery when he opens the case to discover that it is stuffed with money. Lamont wants to turn the money in and Fred wants to keep it and locks in a safe. Just then a gunman shows up wanting the money.