Walt Disney's Uncle Scrooge #15

Scrooge goes to South Africa to match his wealth against that of Flintheart Glomgold, proclaimed to be the richest duck in the world. After comparing their wealth, Scrooge and Flintheart find that the title of richest duck hangs on who has saved the largest ball of string. They roll their string across open African country to determine whose roll is the longest. First appearance of Flintheart Glomgold.