A fine and attractive stainless steel chronograph wristwatch with date, bracelet and box

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  • Condition Report

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  • Manufacturer: Tudor
    Year: Circa 1978
    Reference No: 9420/0, inside caseback stamped 9421
    Case No: 880’178
    Model Name: Big Block
    Material: Stainless steel
    Calibre: Automatic, cal. 7750, 17 jewels
    Bracelet/Strap: Stainless steel Rolex Oyster bracelet stamped “78360”, endlinks stamped “589”, max length 190mm
    Clasp/Buckle: Stainless steel Rolex Oyster deployant clasp stamped “B”
    Dimensions: 40mm diameter
    Signed: Case, dial, movement, bracelet and clasp signed
    Accessories: Further accompanied by original caseback sticker, Tudor outer packaging and fitted presentation box.

  • Catalogue Essay

    In the early 1970’s, Tudor released their first chronograph wristwatch, the Oysterdate powered by a manual Valjoux cal. 7734. Having already established a status with the successful launch of the “Monte Carlo”, the firm launched the ref. 9240/0 as being the first self-winding chronograph wristwatch by Tudor in 1976. Dubbed by collectors as the “Big Block”, the case is rather thick providing a nice hefty presence on the wrist.

    The present example “Big Block” preserved in attractive overall condition with a refreshing grey dial with blue and orange accents is without a doubt a desirable tool watch. It is further accompanied by the original presentation box as well as the original caseback sticker.

  • Maker Bio

    Tudor

    Swiss • 1926

    Almost twenty years after Rolex was founded, Hans Wilsdorf established Tudor with the intention of making more affordable watches without compromising the quality for which Rolex was renowned. Tudor was named after the British Dynasty that ruled England from 1485 to 1603, and their symbol came from the "War of Roses." After interchanging Rose and Shield symbols for a number of years, the firm replaced the Rose with the Shield logo from the 1960s until today.

    Some of the most recognized vintage models made by Tudor include the Submariner, a waterproof model first introduced in 1954, the Oysterdate, the earliest versions of which were nicknamed the "Monte-Carlo," the Heritage, which included the date at 6 o'clock, as well as the Pelagos, which translates to "deep sea" in Greek.

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Tudor

Ref. 9420/0, inside caseback stamped 9421
A fine and attractive stainless steel chronograph wristwatch with date, bracelet and box

帝舵,「Big Block」型號9420/0,精細,精鋼自動計時鏈帶腕錶,備日期顯示,約1978年製。附錶盒

Circa 1978
40mm diameter
Case, dial, movement, bracelet and clasp signed

Estimate
HK$70,000 - 120,000 
€7,900-13,600
$9,000-15,400

sold for HK$150,000

Contact Specialist

Thomas Perazzi

Head of Watches, Asia
+852 2318 2031

WatchesHK@phillips.com

 

The Hong Kong Watch Auction: X

Hong Kong Auction 10 July 2020