This clock is reputed to display the time of death of anyone that approaches it.
c.1821 The Infamous Swiss Death Clock was constructed by Herschel Glueke, genius but demented watchmaker. It is intended to show the exact time of death of anyone that comes near it. When placed in the Firehouse in close proximity to so many past-life entities, the clock's hands spins out of control. Peter uses it as a desk fan.
Where to Find It
In the Field: Before heading upstairs with Egon, go to the small area with the vending machines which also has a water fountain. Open the door to find a small room liberally covered with Black Slime, the clock is in the center.
At the Firehouse: First Floor, on Peter's desk.
The Swiss Death Clock is currently on display at Ray's Occult Books.