I don't often come across cards or ephemera that have sumo wrestlers advertising commercial products. There just weren't that many that I know of and not a whole heck of lot of wrestlers were using their likeness to promote products. When I came across this card issued by Daichi Pharmaceuticals, I knew it was something I needed to pick up. For ￥100, it made it an even better deal....in fact, I paid many times more in fees and shipping than the actual card itself.
This card was issued right in the middle of 1981 when Chiyonofuji was on the brink of promotion to the rank of Yokozuna. He was the hottest thing in sumo and would carry the sport throughout the 1980s until the Hanada brothers took the reigns in the early 1990s. It appears this particular card was issued with a product call Patex, a compression support of ankles, elbows, and other joints...hence the fact that Daichi issued it. The back has a 6-month calendar from September 1981-February 1982...an interesting calendar span. I've done other searches for additional cards, but it appears this is the only card.
I'll get this inserted into the next edition of my book. Not sure what I'll categorize it as yet.