The A. Lange & Söhne Lange 1 Daymatic reference 320.040 is a limited edition of 20 pieces. It was introduced in 2018 in celebration of the 10th anniversary of the A. Lange & Söhne Boutique in Tokyo’s upscale Ginza district. It features a white gold case and a guilloché dial. The hands, the numerals of the date discs, and the inscriptions on the dial are blue. It is furthermore fitted with a dark-blue alligator leather strap with solid white-gold prong buckle.