The clock went up in the fall of 1978. Two alumni, Lindsey Smith and Henry Claxton (then in their senior year), hung it as a prank, said Marilyn Somers, director of Living History. The two “owned up” to the prank after they graduated. But, the giveaway to its origin is in its brand: Smaxton — a combination of their two last names, which is visible on the clock.