Claim: Hiroyuki Kanai bought the Bordeaux letter in 1971 for 120 million yen, which was worth about 6 million dollars at the time, but is worth six times that much today.
Evidence: In 1971, he bought the Bordeaux Letter, a cover with both the one penny red and two penny blue stamps addressed to Bordeaux, for 120 million yen. At that time this was about 1 million US dollars, which would possibly equal about 6 million US dollars today.