HomeSport watchesLongines Sei Tacche

Longines Sei Tacche


Maker: Longines
Model: Sei Tacche
Functions: –
Case Material: Stainless steel
Case Width: 33mm
Case Thickness: 12mm
Crystal: Plexiglass
Lume: Yes, tritium
Lug Width: 16mm
Box/Papers: N/A
Year: 1946


If you ever think of a rare Sei- or Tre-Tacche you will imagine something very similar to this. The dial is in immaculate condition featuring a ‘tuxedo’ style dial with an outer scale showing the fifth of a second (usually used by doctors). This watch initially was produced with radium lume, but this one was relumed sometime around the 1970s-1980s, due to the radioactivity of the radium material, and they used tritium. The case is sharp and not overly polished. The movement, a rare Longines caliber 12.68N is working flawlessly.



You may have heard of the terms Sei-Tacche and Tre-Tacche before. This is Italian for six or three notches (or holes). Therefore, if your Longines case back has three holes it would be a Tre-Tacche case, and if it has six, I’m sure you can guess it.

This particular watch is rare. A Sei-Tacche watch from the 40s with a rare ‘tuxedo’ two-tone dial, featuring a fifth of a second outer track and central seconds is not something you come by every day. The movement doens’t fall behind either: a rare centered seconds 12.68N (the rarer version of the 12.68Z that features sub-seconds).

This is your opportunity to grab a master piece of Longines watchmaking heritage.