1971 Japanese Sumo Wrestling 3D Lenticular Cards - Move over Kellogg's!

This auction had me super excited as I counted down the days until it ended and I wasn't about ready to let these slip through my fingers.  For the vintage sumo menko and card collectors, this is the toughest set to find in the post-menko era (after 1964).  Some of the very first lenticular/3D cards in both the Japanese baseball and sumo world, this 15-20 card set features baseball players, boxers, and sumo wrestlers.  These black-backed wonders capture the very first card of Takamiyama, the first foreigner to win a sumo tournament, as well as Tamanoumi who was destined for greatness only to pass away shortly after this card was produced from appendicitis.  I have seen only one other of these (another Takamiyama) and these will likely only pop up once every 5-10 years at the rate I am seeing them.  Distribution of these is unknown, but could have very well been issued with candy or gum.  Have a great week and stay safe out there.  Sayonara!