A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar (2016)

Launched in 2016. 18k white gold, 41.9mm with a thickness of 12.1mm, priced at 315,900€

At 41.9mm wide and 12.2mm thick, for me, the size of the A. Lange & Söhne Lange 1 Tourbillon Perpetual Calendar is just right. The watch was previously released in 18k rose gold as well as platinum. The latter model could theoretically be confused with this 18k white gold model, but it has a silver-colored dial and was limited to 100 pieces. For this 18k white gold model, paired with a grey dial.