The Patek Philippe Calatrava Steel Blue Dial 40mm Ref. 6007A-001 marks a milestone in the brand’s history as a 2020 limited edition of 1,000 pieces. Crafted in stainless steel, this 40mm case is matched with a blue dial featuring a distinctive ‘Carbon’ pattern and applied Arabic numerals for modern appeal. The sapphire crystal ensures dial clarity and scratch resistance. Powered by the selfwinding Calibre 324 S C movement, it delivers hours, minutes, seconds, and a date function, with a 45-hour power reserve and 29 jewels for reliable performance. The blue fabric strap with stainless steel clasp gives the watch a sporty character. Unique selling points include its limited availability, contemporary blue dial design, and robust steel construction, a rare combination for the Calatrava collection. This reference is a strong choice for collectors seeking a Patek Philippe with both technical substance and unique commemorative value.