Up for sale is a Tudor "Big Block" Chronograph with a lovely reverse panda dial, a strong case, and the workhorse Valjoux caliber 7750 automatic movement ticking inside. The "Big Block" was produced in many different variations throughout the 70s, 80s, and 90s and marked the Rolex family's first automatic chronograph and Tudor's first three-register chronograph. The "Big Block" nickname was given to the watch because of the thicker case required to house the automatic chronograph movement. The three-register design shared a striking resemblance to the Rolex Daytona, and standard models sported either a silver panda or black reverse-panda dial. This particular watch comes with Tudor inner and outer boxes.


This "Big Block" is in good condition. The case is strong and thick and shows normal wear for a 30-year-old sport watch. There are a few shallow scratches and nicks here and there, but no major imperfections. The bezel has some hairlines to the polished surface, but retains good definition with the black filling still present in the engravings. The caseback engravings are sharp and deep and remain protected by a sticker, presumably from the last service. The glossy black dial is clean and the crystal is in excellent condition with just a few very light scratches that can easily be removed with some Polywatch. The hands and indices show signs of patina, which is not uncommon for this reference. The hour hand has a couple of small scratches towards the center. Under UV light both tritium dial and hands exhibit the same behavior and do not glow. The Tudor 78360 bracelet is in great condition with little to no stretch and only a few small hairlines present. It has 12 links and should fit up to a 7 ⅜ inch wrist. I do have 1 extra link on the way that will be included with the watch. The clasp code is R2, which dates the bracelet to 1993 (and matches the date of the watch case). The movement's service history is unknown. All functions including the crown-winding, time-setting, date-setting, and chronograph start/stop/reset are working as expected. The movement accuracy has been manually observed and is running at -3s per day when placed flat.


Model: Big Block
Reference: 79180
Year: 1993
Case Number: B53XXXX
Material: Stainless steel
Diameter: 40mm
Lug Width: 20mm
Dial: Black
Lume: Tritium
Crystal: Plexiglass
Movement: Valjoux caliber 7750 automatic movement
Bracelet/Strap: Original Tudor 78360 stainless steel bracelet with 589 end links
Accessories: Inner and outer Tudor boxes


I'm asking $7,000 net to me via bank transfer or PayPal + fees. The price includes expedited shipping via FedEx within the U.S. and internationally. Trades will not be accepted.

Feel free to reach out if you have any questions and I'd be happy to answer them for you. I've sold numerous watches on the forums and can provide references at your request. I'm also available on instagram as tickingtimehomme. Thanks for looking!

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