
Wristwatches · Wristwatch
Tudor Chronograph BIG Block 94300 (Transitional), 1979–1980
- Maker / attribution
- Tudor (maker)
- Date
- 1979–1980
- Historical period
- Quartz Revolution (1969 – 1990)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Stock no.
- Product 7353308419
- Credit line
- Dealer listing, Craft & Tailored (product 7353308419)
- Catalogue title (original)
- 1979-1980 TUDOR CHRONOGRAPH BIG BLOCK 94300 (Transitional) (English)
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Record summary
Catalogued by Craft & Tailored (dealer), Los Angeles (stock number Product 7353308419), this is a wristwatch by Tudor, made in Switzerland, dated 1979–1980. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Wristwatches collection. The record is illustrated with 6 photographs.
Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.
Catalogue description
Dealer description — Craft & Tailored
This 1979-1980 transitional Tudor Chrono Ref. 94300 is a true collectors piece and is in stunning original condition. The early Tudor Chronograph references are commonly referred to as the Tudor "Big Blocks" as the mid-case size is thicker and heaver then the big brother Rolex Daytona references. The early Tudor Chronograph references do share a lot of common traits to the big brother Rolex Daytona references including the same steel bezel with engraved tachometer scale, Rolex 78360 Oyster bracelet and 589 end-links, as well as the Rolex Trip-Lock crown and screw down pushers. The dial on this specific Tudor reference 94300 is also very similar to the Rolex Daytona's of this era as it possesses the trapezoidal applied markers and a stunning silver surface that is reminiscent of the Rolex Daytona 6265 of the same era which also posses black stepped subdials with the white chrono hands located within the subdials. The workhorse Valjoux 7750 movement is signed tudor and also possesses the signature half moon cut out rotor that will not be present at the mid to end of the 1980's. In 1979 the Tudor ref. 9420-0 bared only the chrono time writing at the three o'clock position on the dial, which would then be moved over the hour register, together with the word automatic in late 1979 and early 1980. In addition the late seventies and early eighties transitional models contained fully painted hands, in white for the silver dial, or in black for the black dial variant. The case back of this specific example is stamped 9420, whereas the mid-case is stamped 94300, increasing the uniqueness of this piece. Stock # TDWBB94300 Brand Tudor Style Big Block Chrono Time Automatic Model 94300 Serial 14424 Size Men's Material SS Dial "Panda" Silver With Black Sub Dials Millimeters 40 Bracelet Rolex Oyster 78360 With 589 End Links CASE & BRACELET The case of this 1980 Tudor Ref. 94300 chronograph aka "Big Block" has never been polished and is in original found condition. The original 78360 oyster bracelet retains all of its original links and shows very minimal stretch and is unpolished like the case of the watch. The 78360 Oyster bracelet and 589 end-links are the same that Rolex used on the Rolex Daytona's of the late 1970's and early 1980's. This specific early reference also retains the original Rolex signed Trip-Lock crown and rolex screw down pushers which are also original to this specific era of Tudor Chrono-Time 94300. The stainless steel bezel with engraved tachometer scale is in stunning original condition and shows light wear and patina consistent with the age of this specific Tudor 94300. DIAL The matte dial of this 1980 Ref. 94300 is in pristine and original condition. The "Panda" dial is a wonderful warm silver showing just the right amount of light and even patina and the black sub dials also give this watch a sunning contrast on the wrist. The date window is surrounded by the era and period correct black box which is absent from the later era productionTudor Ref. 94300 chronographs. The hands on the sub-dials are factory spec full white, which is very specific to the early Tudor 9430/0 and 94300 references. The hands, including the chrono hand, are black as they were during this time, and the lume within the hands shows close to zero lume degradation. The lume plots at the end of the specific and era appropriate applied trapezoidal indexes are fully intact. Also present is the "T SWISS T" marking, which is absent from the later era production dials. ACCESSORIES None.
Historical context
Quartz Revolution (1969 – 1990)
Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.
Quartz and digital watches transformed the market after 1969. Swiss employment collapsed, Japanese and Hong Kong production soared, and the Swatch (1983) helped the Swiss industry recover; mechanical watches survived as luxury goods.
Read the period in the timelineMore wristwatches from this periodEarlier: Modern Mechanical Horology
Atlas type guide
Chronographs and split-seconds watches
A chronograph is a watch with an additional seconds hand that can be started, stopped and returned to zero independently of the timekeeping. Louis Moinet built an early example in 1816 and Nicolas Rieussec a recording 'chronographe' in 1821; Adolphe Nicole's heart-shaped reset cam (patented 1862) made the modern return-to-zero possible. Split-seconds (rattrapante) chronographs add a second hand that can be stopped for intermediate times; flyback chronographs restart instantly.
Chronographs were essential tools for doctors (pulsometer scales), artillery (telemeter), engineers and sport. In wristwatches, Valjoux, Venus, Lemania and later the automatic chronographs of 1969 (Zenith El Primero, the Chronomatic Calibre 11 group and Seiko 6139) are milestones.
What to look for
- Push-pieces on the case band or a single button in the crown (monopusher).
- Subsidiary registers for minutes and hours; tachymeter, telemeter or pulsometer scales.
- Column wheel versus cam control visible in the movement.
- Calibre markings of specialist makers (Valjoux, Lemania, Venus, Landeron).
Dating clues
- Pocket chronographs with heart cam reset: after 1862.
- Wrist chronographs: from c. 1910; two-button designs from the 1930s.
- Automatic chronographs: from 1969.
General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.
Read next:Flyback chronographChronograph
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