Dear All,
Thank you very much for your replies and interesting information.
In the meantime, I decided to send an e-mail to OMEGA and ask them the same question.
Here is the reply:
"...OMEGA is, and has always been, the only watch brand with timepieces officially qualified by NASA for manned space missions. Approved through rigorous testing in 1964, this qualification positioned OMEGA as the only supplier of watches for NASA’s Human Space Flight Program including all six moon landings.
To celebrate this heritage, a number of OMEGA Speedmasters have included a case back with the words “THE FIRST AND ONLY WATCH WORN ON THE MOON”.
Inevitably, with such rich territory for storytelling, there have since been competing narratives that focus on individual astronauts and their personal effects.
In the interests of clarity, we have simplified this message to state “THE FIRST WATCH WORN ON THE MOON”. This incontestable truth continues to highlight OMEGA’s proud connection to space exploration and the fact that only OMEGA watches have ever been officially supplied for NASA missions."
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