The 2nd generation Ingenieur SL has a lot going on. Design uniformity in the integrated bracelet and tonneau case, attractive details like the drilled porthole bezel, gold hands and indices, and matching date wheel.

 

The classic IWC signature on the black graph-paper dial adds a sort of studious sophistication to this decidedly lux but accessible 1980s sport watch and the best part is that it comes in NOS condition.

 

CASE:

• excellent overall condition, showing no traces of use (Nos)
• 3- body stainless steel case with snap-on caseback
• 34 mm (without crown) / 40 mm (lug-to-lug) 
• Year: 1983
• Reference: 3506 

MOVEMENT:

• IWC Cal. 3753 - automatic
  
• 22 jewels, 28800 A/h, 42 hours power reserve
• professionally serviced 08/2021
• +5sec/d / 270°
• no movement shot because its pressure tested (looks flawless)

DIAL:

• original never touched black graph-paper dial in flawless condition
• original hands, dial and crown