During the 'quartz crisis' of the 1970s and 1980s, the advent of quartz technology posed a significant threat to traditional mecha෴nical watchmaking. Quartz watches, characterized by their inexpensive production costs and high accuracy, flooded the market, leading to a decline in demand for mechanical timepieces. In response to this crisis, the creation of the Caliber 2120/2800 by three watchmakers at Audemars Piguet symbolized a resurgence of traditional mechanical watchmaking values and craftsmanship. By developing this ultra-thin automatic movement (3.95mm), theyℱ demonstrated a commitment to innovation and excellence, showcasing the enduring appeal of mechanical watches even in the face of technological advancements. The Caliber 2120/2800 not only represented technical achievement but also served as a beacon of hope for the Swiss watch industry during a challenging period.

Crafted with impeccable artistry and precision, the Audemars Piguet Reference 25557BA comes encased in 18 carat yellow gold. The hallmark octagonaꦡl bezel encapsulates the classic spirit of the Royal Oak collection, while the integrated gold bracelet seamlessly merges form and function, ensuring both comfort and elegance for the wearer. This timepiece was produced in a limited run, comprising 125 pieces in yellow gold, 85 pieces in a blend of yellow and white gold, and 4 pieces in white gold.

The Aud𒅌emars Piguet Reference 25557BA, with its impeccable craftsmanship and limited production in various precious metals, stands as a timeless testament to the enduring allure of traditional mechanical watchmaking amidst the challenges of the quartz crisis.