Rolex - Tru-Beat

  • Movement 
    Automatic
  • Year of manufacture 
    1956
  • Lot number 
    131
  • Case material 
    Steel
  • Diameter 
    35
  • Bracelet material 
    Steel
  • Location
  • Watch type 
    Men/Unisex

Description

ROLEX "Tru-Beat", ref. 6556, around 1956. Steel round case, diam. 35 mm, n. 138670 (very good condition). Brown dial with applied indexes, (very good condition, original). Automatic movement, with "dead seconds", cal. 1040, n. N823345, (very good condition). Bracelet Rolex USA with finals ref. 60. Dial, case and movement signed. The movement to "dead seconds" is very rare; it is independent of the main mechanism and allows the second hand to advance by one second every beat. It was used for scientific purposes, to measure the seconds accurately.
Starting price: € 7'000