you are correct: there are three major version of the Siffert (Autavia Reference 1163T; Cal 11 / 12 automatic, with Tachy Bezel; white dial; black registers; blue trim). First version (very rare) was marked "Chronomatic"; second had the polished steel hands; third had the brushed steel hands. (see the OnTheDash page that covers this, inked below).

In this second version, with polished steel hands, the earlier ones had plain polished steel hands with luminous inserts; the later ones had polished steel hands with luminous inserts, and also dark (black / blue) inserts, between the luminous and the center pinion.

your photo illustrates this very nicely.

thanks,

Jeff

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

: Right is the model, which I would call the
: transition Jo Siffert. Tha hands have the
: same form and style as with the older one
: (left) but do have blue inlays at the
: beginning of the hands. The tip of the hands
: is non blue.

: Its the second time I hold such a Siffert in my
: hands: Any thoughts on that?

: Alex