Skip to content
The Encyclopedia of Horology

Wristwatch · Chronograph

SC-Turbo Design Chronograph

Partially verified

This SC-Turbo Design chronograph originates from the 1980s and is presented as part of the collection of designer Magnus Walker. The watch features a 40mm stainless steel case finished with a factory black PVD coating. The matte black dial displays hour markers filled with tritium luminous material that has developed a beige sandy patina. The hands are also tritium-filled, complemented by a neon orange chronograph seconds hand. Internally, the watch is powered by a Swiss-made Valjoux 7750 automatic movement. The exterior exhibits signs of wear, specifically on the PVD-coated crown. The piece is fitted with a later-period Porsche Design stainless steel bracelet with a matching PVD finish. According to the provided information, the watch maintains accurate time, although its service history remains unrecorded. No original boxes or documentation accompany the piece.

Front view of the SC-Turbo Design chronograph showing the matte dial, tritium markers, sub-dials, and the 'LUN 27' day-date display.
Front view of the SC-Turbo Design chronograph showing the matte dial, tritium markers, sub-dials, and the 'LUN 27' day-date display. — Zamanito / Craft & Tailored. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Chronograph
Maker / attribution
SC-Turbo Design
Reference
Not recorded
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1980s
Source-reported place
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Dial

The watch is housed in a 40mm stainless steel case that features a factory-applied black PVD finish. The chronograph pushers retain their original coating, while the crown exhibits visible wear to the PVD finish from regular use.

The dial is finished in a matte black tone, featuring hour markers treated with tritium luminous material, which has aged to a beige, sandy color. Complementing the hour markers are tritium-filled hands, while the chronograph seconds hand is finished in a neon orange color for contrast. A day and date display is integrated into the dial at the three o'clock position.

Evidence for this section
  • “بدنه ساعت با قطر ۴۰ میلی‌متر از جنس فولاد ضدزنگ ساخته شده و دارای پوشش مشکی PVD کارخانه‌ای است”
  • “صفحه ساعت به رنگ مشکی مات طراحی شده و شاخص‌های آن با ماده شب‌نمای تریتیوم پر شده‌اند که به رنگ شنی بژ تغییر یافته‌اند.”

Movement and Functionality

The watch is driven by the Valjoux 7750, a widely utilized Swiss-made automatic chronograph movement. The movement provides standard timekeeping and chronograph functions. The screw-down case back is inscribed with details regarding its mechanical features, including shock resistance (Incabloc), anti-magnetic properties, and water resistance, although detailed technical specifications for the movement are not provided in the source documentation.

While the auction description reports that the watch remains operational and holds time, there is no documented record of previous service intervals. The watch is presented without any original packaging or accompanying manufacturer papers.

Evidence for this section
  • “در درون این کرنوگراف، موتور اتوماتیک نام‌آشنای کالیبر Valjoux 7750 سوئیسی قرار دارد”
  • “ساعت کارکرد خود را حفظ کرده و زمان را نگه می‌دارد، اما سابقه سرویس‌های قبلی آن مشخص و ثبت نشده است.”

Provenance and Attribution

This specific timepiece is noted for its provenance as part of the personal collection of Magnus Walker, a designer known for his automotive work. The SC-Turbo Design name links the watch to the Porsche 911 model line, specifically the SC and Turbo variants, aligning the aesthetic of the piece with 1980s automotive themes.

The bracelet currently fitted to the watch head is a later-period Porsche Design steel bracelet with a PVD coating, differing from the original configuration of the watch head itself. The attribution of the watch's origin as Swiss is supported by markings located on the dial and the case back.

Evidence for this section
  • “طبق اطلاعات ارائه‌شده از مجموعه شخصی مگنوس واکر (Magnus Walker)”
  • “نام‌گذاری SC-Turbo به دو مدل شاخص پورشه ۹۱۱ یعنی کدهای SC و Turbo اشاره دارد”
  • “دستبند ساعت متعلق به دوره‌ای متأخرتر با پوشش PVD و نشان Porsche Design است.”

Open research questions

  • What is the specific production relationship between SC-Turbo Design, Lejour, and the Orfina Porsche Design chronographs?
  • Are there any specific manufacturer hallmarks or serial numbers located on the inner case back that confirm the original production timeline?

Source evidence

Recorded claims and source quotations for SC-Turbo Design Chronograph
FieldSource-reported valueSource quotation
MakerSC-Turbo Design“نام تجاری SC-Turbo Design”
MovementValjoux 7750“کالیبر Valjoux 7750”
Case MaterialStainless steel with PVD coating“بدنه ساعت با قطر ۴۰ میلی‌متر از جنس فولاد ضدزنگ ساخته شده و دارای پوشش مشکی PVD کارخانه‌ای است”
ProvenanceMagnus Walker collection“طبق اطلاعات ارائه‌شده از مجموعه شخصی مگنوس واکر (Magnus Walker)”
Luminous MaterialTritium“شاخص‌های آن با ماده شب‌نمای تریتیوم پر شده‌اند”
BraceletPorsche Design PVD steel“دستبند ساعت متعلق به دوره‌ای متأخرتر با پوشش PVD و نشان Porsche Design است.”

Visible details

  • Matte black dial with tritium luminous markers
  • Neon orange chronograph seconds hand
  • Day and date display window
  • Stainless steel bracelet featuring Porsche Design branding

Research qualifications

  • Unverified technical service history
  • The bracelet is identified as originating from a later period than the watch head

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

ساعت مچی کرنوگراف SC-Turbo Design دهه ۱۹۸۰ با پوشش PVD

Reviewed 2026-11-02 · Record d6b7870abf

Terms in this record

Glossary explanations for terms named in this object’s record.

Other chronograph records