Longines 5528 Sei Tacche 36 mm Big Size ‘Crème Brûlée’ Dial circa 1950’s

This Longines ref. 5528 “Sei Tacche” is a beautifully preserved example of one of the brand’s most iconic mid-century designs. The Italian nickname Sei Tacche refers to the six notches on the screw-down case back, a hallmark of Longines’ robust waterproof cases from the era. While many examples were produced in smaller sizes, this rare 36 mm variant offers a more contemporary and versatile presence on the wrist.

The original radium dial has developed a warm, crème brûlée–like patina, giving the watch exceptional character. The Arabic numerals and aged luminous material pair perfectly with the stainless steel case, creating a look that is both utilitarian and deeply charming. Powering the watch is Longines’ respected manual-wind cal. 12.68Z, known for its reliability and elegant construction.

This example features matching case and case-back numbers under the upper-left lug — a significant detail for collectors. Additionally, the watch was serviced in May 2025 and has not been worn since, making it ready for everyday enjoyment or long-term preservation.

Highlights

• Matching case and case-back numbers

• Serviced in May 2025, unworn since

• Rare 36 mm case (most Sei Tacche examples are 32 mm)

Specifications
Brand: Longines
Reference: 5528
Model: “Sei Tacche”
Case Material: Stainless steel
Dial: Radium dial with crème-brûlée patina
Markers: Arabic numerals
Movement: Longines manual-wind cal. 12.68Z
Case Diameter: 36 mm
Year: Circa 1950s

A rare large-case Sei Tacche with beautiful patina — rugged, elegant, and highly collectible.