So we were wandering through Kouenji, just outside Shinjuku, when we came across a strip of American vintage and antique stores. I can't tell if this human skull painted with what look like someone's drag racing livery was attached to the rocking horse in its home country, or here in Tokyo. And the store was closed, so we may never know.
If you must have it, price and human skull bedamned, let me know and I'll send you the Google Map coordinates.