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1956 IWC Schaffhausen Ingenieur Ref.666 AD LNOS


14-days Inspection Period / 1-year Warranty

Delivery: ca.10 days

Legendary tool watch IWC Schaffhausen Ingenieur which was among the very first watches designed to be truly antimagnetic and resist strong magnetic and electric fields. The first generation of Ingenieur bears reference 666 for no-date version and 666 AD with date. This timepiece is notable for an unusual combination of "toolwatch" origin and capabilities with a very elegant design of a dresswatch made of 18k solid yellow gold. The case measures 37 mm without crown and has a soft iron inner case, the movement is reliable and famous Cal.8521 which was among the first to use Pellaton system, the dial is a beautiful pie-pan dial in outstanding condition. Not sure you can get it any better!

Professionally serviced in May 2018. Technical warranty: 1 year.

Case:

  • Solid 18k yellow gold 2-body case with screw-down case back and inner case made of soft antimagnetic iron. Mixed satin and high-polished finishing.
  • Unpolished like-new condition of the case showing minor traces of storage and use
  • 37 mm (without crown) / 48 mm (lug-to-lug) / 18 mm (between lugs)
  • Original signed crown
  • Original plexiglass crystal
  • Serial number: 1364731

    Movement:

    • Automatic with sweep second hand and date
    • Precise and collectible Caliber 8251, signed "International Watch Co Swiss"
    • Pellaton system, 19800 A/h, Incabloc, 44 hours of power reserve.
    • Mint condition. Professionally serviced in May 2018.
    • Serial number: 1334851

    Dial:

    • Original silver-white "pie-pan" dial in outstanding near-NOS condition.
    • Signed "International Watch Co Schaffhausen" at 12 o’clock. Signed "Ingenieur" at 6 o'clock, signed "T Swiss T" at 6 o'clock.
    • Golden raised hour markers
    • Original golden luminous hands, golden sweep seconds hand.

    Delivery set:

    • The watch comes with a handmade wild leather strap and generic gold-plated buckle.
    • Our company’s warranty certificate, invoice and general terms and conditions.

    Related Items

    Sizing Product

    Measuring a watch

    It is always crucial to understand the size of the watch, especially when it comes to vintage watches which are generally considered as too small in comparison with what watch industry offers today. For example, the original Patek Philippe Calatrava introduced in the 1930s was only 31 mm in diameter, while today's classic Calatrava is 39 mm. When you think about 8 mm, it doesn't seem to be a big difference, but believe it is.

    In our condition reports we normally disclose three most important parameters as follows: diameter without crown / lug-to-lug length / lug width. 

    Diameter without crown

    It is, so far, the most important measurement to understand the size of a regular round-shaped watch.It helps you to understand proportions and overall look of the watch. It is important to consider width of the bezel and color of the dial, because certain combinations may make the watch look bigger, while some other smaller. It is all very individual, however there is common understanding:

    Lug-to-lug width

    This parameter will help you to understand whether the watch is comfortable for wearing. You should compare lug-to-lug width with the width of your wrist, and if lug-to-lug width is smaller or equal, then this watch shall be comfortable.

    Lug width

    This measurement is defining what size of strap you need for the particular watch. Depending on era and manufacturer you can find watches with lug width between 14 mm and 24 mm. Most common sizes are 18 mm and 20 mm.