So I just updated the Movements page, to include two V92 movements, one marked Ed. Heuer & Co SA (serial 524xx) and the other marked Heuer Leonidas SA (serial 756xx).

Movements page is here -- http://www.onthedash.com/movements/

Jeff

Valjoux 92 -- marked Ed. Heuer & Co. SA (shown in Autavia, Reference 3646; serial 524xx)

Valjoux 92 -- Marked Heuer Leonidas SA (shown in Carrera, Reference 3647; serial 756xx)

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: Hi there, hope everyone is having a great holiday season! I'm still
: in the process of learning all I can about the Carrera before
: purchasing one, and came across this one today with MN and SOX
: on the movement. The seller says its possible the bridge could
: be a replacement. In this case, what is the significance of the
: MN? Does this mean it is a 92 movement not made by Heuer? Would
: this affect the value of the watch? Does anything in this
: movement strike anyone as off?

:
:

: Also the crown is unsigned. Should Carrera crowns be signed to be
: original? Or was there a phase in production where they were
: unsigned?

:
:

: The Crystal and tension ring are apparently NOS replacements. I
: don't mind this as long as it is authentic to the period.

: Would love to get your collective wisdom on this and always looking
: to learn more about these beautiful watches. Wishing everyone an
: excellent New Year!