Is This a Foot Shaped Lamp?

There are not good grounds for connecting all foot shaped lamps with the serapis colt. The smoke rising before the god from the lamp would create an eeri religious effect. Although serapus was by no means the only deity honored on lamps, his frequent presence is evidence of his guardianship over this bronze foot. It comes back to the basic question, like, how much of this is novelty? How much of it is based in some reference that just has not survived the ages?