Ingenieur 666 A

The first Ingenieur, time-only. Three-part 36.5 × 13.2 mm case with screwed back and unscrewed crown, a soft-iron inner case and dial back shielding to 80,000 A/m, and the case number between the lower lugs rather than on the back. Silver or black dial with pointed applied indices, luminous dots and dauphine handsDauphine handsBroad hands that taper towards their tips, with a central facet running lengthwise. The name describes a hand style, not a particular maker or reference.; lightning-bolt “Ingenieur” logo. CalibreCaliberThe designation of a watch movement, identifying its design or movement family. 852, then 853 from 1958.