*Unpolished* 1989 Tudor Big Block Chronograph (Ref. 94300) W/ Papers and Hangtag

The Tudor "Big Block" chronographs were introduced in 1976 and replaced the Montecarlo series of chronographs that were originally released in 1970. Both the Tudor Montecarlo, along with Rolex's Daytona, were manual wind chronographs whereas the "Big Blocks" were outfitted with an automatic movement. This was a big advancement for Tudor as it wasn't until 1988 that Rolex offered an automatic version of the famous chronograph via the zenith based Rolex movements. Also, unlike the Rolex Daytona, Tudor chronographs including the Montecarlo featured date complications. The "Big Block" nickname comes as a result of the mid-case size, which is thicker and heavier than the big brother Rolex Daytona references which accommodated the automatic chronograph caliber Valjoux 7750 which also features a quickset date. 

The silver dial chronographs, whether it be the Big Block or Daytona, have always been a fan favorite among collectors. The black sub-dials create an awesome contrast with the silver sunburst dial that makes for the eye-catching design collectors love.

Stock # TBBC94300
Brand Tudor
Style Big Block Chronograph
Model 94300
Serial 256XXX
Size Men's
Material SS
Dial Silver, Black Sub-Dials
Millimeters 40
Bracelet Tudor 78360 Oyster W/ 589 End Pieces



The strong Big Block case shows honest signs of use and is believed to remain completely unpolished with strong chamfers and factory finishing down the lugs. The stainless steel “Units Per Hour” bezel is in excellent original, unpolished condition and displays light signs of honest use. The case retains its original Rolex trip-lock crown and the screw-down pushers were recently replaced. The original Rolex 78360 Oyster bracelet with 589 end pieces is unpolished as well and retains 13 links that show almost no stretch from use.


The silver sunburst dial with black sub-dials is simply stunning with the dial itself exhibiting absolutely imperfections of blemishes. The tritium lume plots are ivory in coloration, under U.V. light inspection the 8 and 9 o’clock markers show minor degradation and the rest of the lume plots remain round without degradation. The original tritium hands match the dial perfectly and show no degradation when inspected under U.V. light.


The watch comes complete with its original Tudor guarantee paper and serialized hangtag. The watch was recently serviced and is running perfectly, back by a 1-year warranty of accurate timekeeping.