In Rose Gold, the 1815 Rattrapante Perpetual Calendar 421.032FE is one of the two versions with which A. Lange & Söhne introduced the model at SIHH 2013, alongside the Platinum 421.025FE. It unites a split-seconds chronograph, which can record two intervals that begin at the same moment, with a perpetual calendar that tracks months of every length and the leap-year cycle, so that no adjustment is due before 1 March 2100. A moon phase and a state-of-wind indicator complete the functions. The watch represented a significant step for the manufacture: after seven earlier chronograph movements, Lange created a dedicated hand-wound movement to combine these complications without abandoning the classical look of the 1815. Its reception confirmed the achievement, with two awards at the 2013 Grand Prix d'Horlogerie de Genève. The Rose Gold reference gives the model a warmer, more approachable character than the Platinum, the gold case bringing a soft glow to a dial that is otherwise dense with information, and it has become the version most often associated with the model in the years since its launch.
The Rose Gold case measures 41.9 by 14.7 mm, a size that accommodates the four subdials without crowding. Its polished bezel, satin-finished flanks and notched lugs place it clearly in the 1815 family, and the pushers are integrated neatly into the case band: two for the chronograph on the right and one at 10 o'clock for the split-seconds function. The dial is solid silver with a pale Silver finish, and its displays are arranged in pairs to keep the layout legible. The left subdial combines day and date, with a red numeral 1 marking the start of each month; the right subdial combines month and the four-year leap cycle; the lower subdial places the moon phase within the running seconds; and the upper subdial surrounds the AUF/AB indicator with the 30-minute chronograph counter. The outer railway-track scale is subdivided so that stopped times can be read to a fraction of a second, and black Arabic numerals frame everything in the family's familiar style. Blued steel is used for the minute counter and for the rattrapante hand, standing out clearly against the silver. A Rose Gold deployant buckle secures the alligator strap.
Using the split-seconds function is one of the pleasures of the watch. Once the chronograph has been started with the pusher at 2 o'clock, the pusher at 10 o'clock halts the second of the two central seconds hands, allowing an intermediate or comparative time to be read while the measurement continues. A second press makes it leap forward to catch the running hand. At the end, the chronograph is stopped and reset with the pushers on the right. This choreography is controlled by two column wheels, a construction that requires careful adjustment by experienced watchmakers. The perpetual calendar works silently in the background, switching the date, day and month at midnight and recognising leap years through its four-year cycle. Of the movement's 631 components, 211 are devoted to the calendar and 206 to the chronograph with its rattrapante. It is hand-wound, runs for 42 hours when fully wound, and its balance halts as soon as the crown is drawn out, letting the owner synchronise the seconds with a reference signal. Its German silver plates and bridges, freehand-engraved balance cock and chronograph levers are displayed through the sapphire caseback, where their layered construction can be followed.
The 1815 family has always been A. Lange & Söhne's most direct link to its pocket-watch heritage, named for the year Ferdinand Adolph Lange was born and designed around the Arabic numerals and railway-track scales of the watches his company produced. Complicated pocket watches from Glashütte often combined chronographs and calendars, and the 1815 Rattrapante Perpetual Calendar revives that tradition with a movement created in the twenty-first century. Its arrival in 2013 followed the Double Split, the first wristwatch that could split both seconds and minutes, and the Datograph Perpetual, which paired Lange's flyback chronograph with a perpetual calendar. Since then the model has remained one of the pillars of the 1815 range. A tenth-anniversary edition in 2023 paired a White Gold case with a solid Rose Gold dial in 100 pieces, and the rattrapante alone received its own 1815 model in 2020. The Rose Gold 421.032FE continues to represent the model in its warmest form, the gold of the case recalling the precious-metal pocket chronographs that inspired it.
The 421.032FE suits collectors who want a grand complication they can wear with ease and use every day. Its perpetual calendar asks nothing of its owner beyond regular winding, its split-seconds chronograph offers genuine utility for timing, and its moon phase adds a touch of poetry to a dial that is otherwise strictly functional. In Rose Gold with a Silver dial, it has a warmth that makes it suitable for evening dress and daytime wear alike, and a character less austere than the Platinum version. It will appeal to collectors who admire Lange's chronographs and calendars separately and want both in a single watch, as well as to those who value recognition, since the model was honoured twice in Geneva in its launch year. For owners building a collection around the 1815 family, it is the natural summit; for collectors of complicated watches generally, it offers a distinctively German answer to a combination more often associated with Geneva, executed with the finishing and restraint for which Glashütte is known.
