A. Lange & Söhne Lange 1 Tourbillon "25th Anniversary"

The A. Lange & Söhne Lange 1 Tourbillon "25th Anniversary", reference 722.066F, is a limited edition of 25 pieces with a tourbillon and an 18-carat white gold case. This model concludes the ten-part special series celebrating the 25th anniversary of the Lange 1. The case measures 38.5 mm in diameter and 9.8 mm in height. Manual-winding calibre L961.4 comprises 381 parts, runs at 21,600 semi-oscillations per hour and has a 72-hour power reserve. The case has a see-through back and is rated to 30 metres. A blue alligator leather strap closes with a folding clasp in 18-carat white gold. The dial is crafted from solid silver, with an outsize date and power-reserve indicator.