Thought this was interesting . Looks like a salesman's sample for a magneto Headlight ....transformer says 11 volts. Seller not sure what he has ..think it's a salesman's sample ?
http://www.ebay.com/itm/RARE-ANTIQUE-JNO-BROWN-LARGE-LAMP-SPOT-LIGHT-NICKEL-OVER-BRASS-STUDIO-MODEL-T-/150874238843?pt=LH_DefaultDomain_0&hash=item2320ce2f7b&vxp=mtr
The description says the lamp is 11 inches in diameter. That sound like a real, full-size light to me. Salesman's samples are usually small. However, I don't know what that box is for. Maybe it could have been used by a dealer or salesman to demonstrate the light?