Here's a page from an Ishiwata catalog with two results that have always perplexed me.

First, it clearly states that the 1973 pro road race was won on a frame built with an Ishiwata 017 tubeset. Now, the 1973 winner of that race was Felice Gimondi on a Bianchi. It's definitely Gimondi's victory, as it states the location, Barcelona. Bianchi even named their new top model the Specialissima Barcelona after Gimondi's victory.

Only slightly less startling is the claim for the pro cyclo-cross World Championships. Again, the location leaves no doubt that it refers to Albert Van Damme's victory. He won on a Gitane.

While the Europeans would eventually realize the merits of Japanese tubing, it seems unimaginable that Bianchi and Gitane would select anything other than Columbus or Reynolds during this era. And while there was some questionable Japanese to English translation back in the day, these seen very straight forward and leave nothing to interpretation. If the claims are true, I foresee a lot of blood covered celeste and suicidal Frenchman. Psst, nobody tell Bianchigirll or verktyg.