Thanks so much for your reply Robert that's very helpful.

I totally agree about the the 3647s. Later executions lost the indices at 6 and 9, which to me looks incomplete. Also the additional tach/decimeter track of some models really takes away from the pure clean form of 3647. I like it even better than the 2447, even tho that's considered the flagship. Does anyone know which model/version Jack Heuer prefered?

: Hi David,

: adjusting the tension ring is no big deal. It can be rotated with
: the plexi (crystal).

: You can do it yourself if you have the skill and this tool:

: https://www.ebay.de/itm/362610610425

: Otherwise I would recommend to ask you local watchmaker – there
: is nothing more embarassing than putting too much pressure on an
: original Carrera plexi with the tool and hearing that cracking
: noise...

: I agree that the slightly off-center T Swiss is unusual, but would
: not worry too much about that. Otherwise the watch looks fine to
: me. In my humble opinion, the 3647 S is the purest Carrera of
: them all.

: Robert

: IG: heuer_carrera

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