The 1 Penny piece shows two chains on opposing sides of the portcullis, meaning dualism is a prison. The monarchy or those not tainted with dualism are above this mind supposedly. Do the royals behave enlightened? Not in the slightest.
The above Mesoamerican work shows a man falling through a skull meaning death. He is dragging the serpent down with him. It is attached at the base of the skull and represents the reptilian complex (fight or flight center) in the human brain. Two opposing characters offer up their young or sacrifices to a type of Yin-yang symbol
The above cartoon image comes from an animated film Watership Down. The original version contained this symbolism at the time God was creating animals at the start of the film. It is flashed up briefly and depicts a one-eyed, angry being with two opposing limbs oppressing mankind.