A RARE AND FINE LIMITED EDITION PINK GOLD ONE-MINUTE TORUBILLON WRISTWATCH WITH OUTSIZE DATE AND POWER RESERVE INDICATION, A. Lange & Söhne, Glashütte, "LANGE 1 TOURBILLON", REF. 704.032, NO. 100/250, CIRCA 2000

18k, three-quarter nickel lever movement decorated with Glashutte ribbing and engraved bridges, 49 jewels including 7 jewels set in screwed chatons, one-minute tourbillon carriage crowned with two diamond endstones, mono-metallic compensation balance, adjusted to 5 positions, silvered dial, off-center dial for hours and minutes combined with subsidiary seconds, applied Roman and lozenge numerals, large twin apertures for date with rapid date-setting push button, sector for power reserve indication at 3, aperture revealing tourbillon carriage at 5, polished circular case with chamfered bezel and down-turne lugs, screwed-down sapphire crystal display back, case, dial and movement signed, witdh an 18k pink gold A. Lange & Sohne deployant clasp.

In 2001, A. Lange & Söhne presented its Centennial Tourbillon, in a limited series of 150 in platinum and 250 in pink gold only. With its tourbillon carriage completing one rotation per minute around its axis, this 'Lange 1 Tourbillon' compensates for the effects of gravity on the escapement and thus on the rate of the watch. The present pink gold example being offered at auction is numbered 100.