La Chère Hélice Conçue Par Gustave Ponton D'Amécourt , by nadar , 1863 , photo , Pictorialism style , from the series Helicopter Models
An old photo of a machine with propellers on it.
This is a black and white photo. There is a machine in the middle of the photo. The machine has four propellers on top of it. There are wires coming out of the bottom of the machine. The wall behind the machine is plain and dark.