The A. Lange & Söhne Kleine Lange 1 191.066 is a special watch, made in celebration of the Lange 1's 25th birthday. Only 25 pieces were made, so it's a real collector's item. The dial is a beautiful deep-blue color, with a recess and blue date numbers. The balance cock, which helps keep the watch ticking, is hand-engraved and has cool bluish lines.