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The Encyclopedia of Horology

Wristwatch · Date-Day wristwatch

Tudor Oyster Prince Date+Day Ref. 7020/0

Partially verified

The Tudor Oyster Prince Date+Day, reference 7020/0, is a stainless steel wristwatch characterized by its 39mm "Jumbo" case size. Produced during a brief period between the late 1960s and early 1970s, this model features an Oyster case manufactured by Rolex, equipped with a rotating Turn-O-Graph steel bezel. The watch displays a blue sunburst dial with applied hour indices, a day-of-the-week aperture at the 12 o'clock position, and a date display with a cyclops lens at 3 o'clock. Power is provided by an automatic mechanical movement based on an ETA caliber, a choice noted for reducing the overall thickness of the case. The watch is presented on a leather strap. The auction description reports the piece is in a clean condition, with the case maintaining its original geometric edges and the bezel in a well-preserved state.

Front view of the Tudor Oyster Prince Date+Day ref. 7020/0, showing the blue sunburst dial, Turn-O-Graph bezel, and day-date display.
Front view of the Tudor Oyster Prince Date+Day ref. 7020/0, showing the blue sunburst dial, Turn-O-Graph bezel, and day-date display. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Date-Day wristwatch
Maker / attribution
Tudor
Reference
7020/0
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Late 1960s – early 1970s
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 39mm stainless steel "Oyster" case, which the source notes was manufactured by Rolex. This larger dimensions, described as "Jumbo" in the provided information, contrasts with more standard case sizes for date-day watches of that period. A significant feature is the rotating stainless steel bezel, designed in the "Turn-O-Graph" style, which contributes to the watch's sport-oriented appearance.

The dial is finished with a blue sunburst pattern and features applied hour markers. Complications include a full day-of-the-week window located at the 12 o'clock position and a date display positioned at 3 o'clock. The watch is currently fitted with a leather strap.

Evidence for this section
  • “بدنه اویستر فولادی این ساعت ساخت رولکس بوده و به یک بزل چرخان از نوع ترن-او-گراف (Turn-O-Graph) مجهز است”
  • “صفحه ساعت دارای پرداخت آفتابی (Sunburst) به رنگ آبی درخشان همراه با اندیس‌های برجسته است”

Movement and Production

Internally, the timepiece utilizes an automatic mechanical movement based on an ETA caliber. This choice of a commercial movement allowed for a reduction in case thickness compared to similar models of the era. The reference 7020/0 was manufactured for a restricted timeframe during the late 1960s and early 1970s.

Due to this short production run and limited output, the model is considered relatively uncommon in collector markets.

Evidence for this section
  • “مکانیزم داخلی این ساعت از کالیبرهای اتوماتیک شرکت ETA بهره می‌برد که استفاده از این موتور تجاری سبب شده ضخامت قاب نسبت به نمونه‌های هم‌رده کمتر باشد”
  • “رفرنس 7020/0 تنها برای دوره کوتاهی بین اواخر دهه ۱۹۶۰ تا اوایل دهه ۱۹۷۰ میلادی به تولید رسید”

Reported Condition

The auction description reports the watch is in a clean condition. The geometric edges and lines of the steel case are described as remaining sharp and well-defined. The blue dial is noted to exhibit a mild and uniform patina.

The rotating steel bezel is described as being in an excellent and nearly flawless state, maintaining its original integrity. The provided information regarding condition is attributed to the original seller's documentation.

Evidence for this section
  • “وضعیت ظاهری و فنی این ساعت طبق منبع در سطح بسیار تمیز توصیف شده است؛ به طوری که لبه‌ها و برش‌های هندسی قاب بسیار دقیق و تیز باقی مانده و صفحه آبی‌رنگ آن دارای پتینه‌ای ملایم و یکنواخت است.”
  • “بزل فولادی آن در وضعیت بسیار سالم و تقریباً بی‌نقص معرفی شده است”

Open research questions

  • What is the specific serial number of this watch to confirm its production year?
  • Does the ETA movement retain its original Tudor-signed rotor or specific bridge modifications consistent with the late 60s/early 70s?

Source evidence

Recorded claims and source quotations for Tudor Oyster Prince Date+Day Ref. 7020/0
FieldSource-reported valueSource quotation
MakerTudor“برند: Tudor”
ModelOyster Prince Date+Day“مدل: Oyster Prince Date+Day”
Reference7020/0“شماره رفرنس: 7020/0”
Case materialStainless steel“جنس قاب: فولاد ضد زنگ (Oyster Case ساخت رولکس)”
Case diameter39mm“قطر قاب: ۳۹ میلی‌متر”
Movement typeAutomatic mechanical (ETA based)“نوع مکانیزم: مکانیکی اتوماتیک (پایه ETA)”
Bezel typeRotating Turn-O-Graph“بزل: فولادی چرخان (Turn-O-Graph)”

Visible details

  • Blue dial with sunburst finish
  • Rotating stainless steel Turn-O-Graph style bezel
  • Day aperture at 12 o'clock and date at 3 o'clock
  • Oyster-style steel case with 39mm diameter

Research qualifications

  • Movement caliber details are based on seller reporting and not independently verified
  • The exact production year within the late 1960s to early 1970s window is not specified

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

Consulted source

ساعت مچی Tudor Oyster Prince Date+Day رفرنس 7020/0 با صفحه آبی

Reviewed 2026-11-02 · Record 4388e7a3f4

Terms in this record

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