About 20 years ago I bought this little sake cup from an antique store and I've had it since; it's currently being displayed alongside my meager yokai & netsuke collection on the fireplace mantle. I always thought it was a neat trick to use the refraction of the sake to show a hidden picture under the marble.
Not sure how I never noticed this before, but today I just made this connection:
The mechanics are slightly different, but maybe this was part of the the inspiration for the designers when they were coming up with the crystal orbs to to replace the Beastformers' "hidden" rubsigns?
Edited by bachamn, 01 February 2014 - 09:59 PM.