Iowa - U.S. Highway 18, U.S. Highway 32, U.S. Highway 61, U.S. Highway 65

These shields are all cast out of aluminum-zinc alloy, and the hand-painted finish appears to be the factory paint.
Photo by Jake Bear

Reverse side of US-18 shield.
Photo by Jake Bear

Photo by Jake Bear

Reverse side of US-32 shield.
Photo by Jake Bear

The 61 shield is 1/2 inch thick, as opposed to the other three, which are 3/8
Photo by Jake Bear

Reverse side of US-61 shield.
Photo by Jake Bear

Photo by Jake Bear

Reverse side of US-65 shield.
Photo by Jake Bear