That's interesting to hear, so it may well be that the Project Mercury astronauts didn't visit Japan? And it was just one astronaut?
Here's a #Moonwatchuniverse overview of spacefarer visits to Japan...
No doubt that during the 1960s many wrist watch brands wanted a piece of the action in humankind's exciting new adventure of manned spaceflight which inspired a worldwide public. Remember Rolex missed out on a historic advertising coup, tried with names such as the "
Cosmograph" and the "
Space Dweller" while at least 20 Gemini-Apollo era NASA astronauts and a few cosmonauts owned a Rolex
GMT-master 1675.
Since the Jules Verne novels (1880), the Japanese audience has always been obsessed with exploration and science fiction. By the 1960s Japan had AstroBoy and UltraMan with a huge interest in both Russian and American manned spaceflight missions.
Russian cosmonauts often visited Japan; Yuri Gagarin (May 1962), married couple Andrian Nikolayev & Valentina Tereshkova (October 1965) and Vladimir Komarov (February 1966).
The best known American spacefarer visit to Japan was John Glenn, who in May 1963, after his CapCom - Capsule Communicator duty onboard NASA tracking ship “Coastal Sentry Quebec” for Gordon Cooper’s MA-9 mission, spent a 12 days vacation touring Japan. In February 1966, NASA astronauts Walter Schirra and Frank Borman stayed 4 days in Japan as part of their 8-nations Far East Goodwill tour. In November 1969, Japan was the last stop of the 24-nations Goodwill tour of the Apollo 11 astronauts & their wives.
Anno 2024, at least six different Rolex models have flown in space; GMT-master, Daytona, Datejust, Submariner, Sea-Dweller, and the Yachtmaster.