IWC Ingenieur 3505 SL Two Tone 1987

The 3rd generation Ingenieur SL has a lot going on. Design uniformity in the integrated bracelet and tonneau case, attractive details like the drilled portholes on 18k yellow gold bezel and gold hands and indices. It only was in production between 1985 and 1989 and produced only a few hundred times and there for is not seen everyday.

The classic IWC signature on the golden papergraph dial adds a sort of studious sophistication to this decidedly luxury but accessible sport watch and the best part is that it comes in excellent condition and as a full set with box and papers.

 – wrist size in our picture is 18cm circumference –

BRACELET & CLASP:

• original IWC stainless steel bracelet with no stretch is fitting up to 19,5 cm wrist size and comes with two additional link / 3 mm thick
• original IWC stainless steel clasp

CASE:

• excellent overall condition, showing minor traces of use
• 3- body stainless steel / 18k yellow gold case with screw-down case back
• 34 mm (without crown) / 39 mm (lug-to-lug) / 23 mm (between lugs) / 9 mm thick
• year: 1987
• reference: 3505
• total weight: 117 g

MOVEMENT:

• IWC Cal. 375 – automatic
• 21 jewels, 28800 A/h, 42 hours power reserve
• professionally serviced 12/2024
• +7 sec/d / 270°