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This impressive and highly complicated platinum Blancpain LeBrassus Perpetual Calendar Split Second Chronograph ref. 4286P-3442A-55B is number 48 from a limited edition of 100 examples launched in 2003. It is preserved in very good overall condition.
The split seconds chronograph has a flyback function so that the reset function can be used without the need to first stop the chronograph. In regular chronographs you need to stop, reset, and restart the chronograph if you want to time an event after you have started the chronograph.
This watch has a co-axial crown at 3 o'clock and two push pieces at 2 and 4 o'clock. The flyback function is controlled by the button at 4 o'clock whereas the one at 2 o'clock is used to start and stop the chronograph. The co-axial button in the crown is used to either stop or rejoin the split second hand.
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Condition report
A Christie's specialist may contact you to discuss this lot or to notify you if the condition changes prior to the sale.
The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in a perfect condition. Lots are sold in the condition they are in at the time of sale.
The dials is like new. The case is in excellent condition, some extremely light surface scratches visible under magnification. Deployant clasp with some surface scratching. The movement and functions are in working order at the time of cataloguing, consistent with the age of the watch. The movement has not been tested for accuracy. A service is recommended.