Tudor Advisor
Tudor Advisor
Released in 1957, the Tudor Advisor used an ebauche movement, an undecorated and dissembled movement, from Adolph Schild S.A. (rather than an in-house caliber like the Vulcain or Memovox) which whilst smaller, did not have the same length or volume of alarm. This same movement was used in over 450 different alarm watches during the 1950's and 1960's with examples from Bulova, Gruen, Omega and many more.
It took until 1968 for Tudor to stop using the Oyster case, which whilst iconic is not designed for acoustic performance, and start using a new case with a sound enhancing back (something that the Cricket had been doing since 1947). The Advisor never had the fame of the Cricket or the Memovox because for most of the twentieth century Tudor have been seen playing second fiddle to Rolex.