Bueno pues a ver si esto te vale sobre la marca Yema: Famoso es desde luego.
The Yema watch company -- YEMA Maison Horlogère Française -- was founded in Besancon, France, in 1948. An early coup was the 1953 offering of wristwatches waterproof at depths greather than 200 meters. Yema became James Bond's first movie watch; Dr. No, 1962. The company, which had been wholly-owned by Seiko, is now back in French hands after a 2004 purchase by Louis-Eric Beckensteiner.
Y en este enlace encontrarás algunos Yema conmemorativos :
http://sattlers.org/mickey/tech/horology/wristwatch/yema-bipole.html
y aqui una review con video de un Yema diver 300m :
http://www.the-wristwatches.com/review-of-the-yema-ymhf0310-diver
Si alguien tiene problemas con el ingles, se lo traduzco gustosamente.
saludos
José