Jarno,
your watch looks good, all original even the caliber 92 mark on the inner back case.
Only the very first Carreras( see page 118/119 in Heuer Chronographs) in early 1964 were signed ED.HEUER&CO.SA, after the merger with Leonidas later in 64 the new signature was HEUER LEONIDAS SA.
After the merger for a short period of time some watches were hybrids using the older signature on inner back caseback or movement bridge ( see Autavia page 32/33 )
Yours seems to be a 1965 watch still having the unsigned crown and the first generation dial.
Whats the serial number between the lugs ?
Congrats to a good buy !
Cheers
Arno
ww.heuerchronographs.com

: Early Carrera with this movement. Something is off, I thought early
: ones had the movement signed "Ed Heuer & Co SA".
: On this one it looks like "Heuer Leonidas SA" was
: manually engraved.

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