A. Lange and Sohne 421.025 1815 Rattrapante Perpetual Calendar Platinum (31980)

31980 A. Lange & Sohne 421.025 1815 Rattrapante Perpetual Calendar 421025, 950 platinum case on a strap with a matching 950 platinum tang buckle, manual wind A. Lange & Sohne caliber L101.1 movement consisting of 631 parts, 43 jewels, 42-hour power reserve, rhodium silver dial with painted black Arabic numerals and railroad style minute track, blued steel hands, perpetual calendar with day, date, month, moonphase, and leap year indicators, power reserve indicator and 30 minute counter at 12 o'clock, small running seconds at 6 o'clock, blued steel chronograph hand with gold split seconds hand operated by the pusher at 10 o'clock, sapphire crystal, display back, size 41.9mm, thickness 14.7mm, Like New with Box, Setting Stylus, and Papers; dated 12/2013.

$149,500

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More about A. Lange and Sohne 421.025 1815 Rattrapante Perpetual Calendar Platinum

This is a 950 plantium A. Lange & Sohne 1815 Rattrapante Perpetual Calendar 421.025. It has an alligator leather strap with a platinum signed tang buckle, and scratch resistant sapphire crystals. It has a screw down signed winding crown, rectangular arched chronograph push buttons, and a matching chronograph push button is at the 10 o'clock position on the left-side case band for the split second function. There are also 3 correctors for the calendar on the left-side case band, and another is positioned next to the crown. There is an exhibition sapphire display case back secured with 6 screws, and engraved with "GLASHUTTE I/SA – A. LANGE & SOHNE," a serial number, and hallmarks. The 41.9mm diameter solid three-body case, downturned lugs, and convex bezel, are polished/brushed. The dial is rhodium silver with painted black Arabic numeral hour markers, blued epee hands, and there is a blued center sweep chronograph seconds hand. Around the perimeter is a blue railway-style minute/second scale with Arabic numerals for the split second rattrapante, which is indicated with a gold center sweep hand. It has three recessed silver subsidiary dials with black markers, Arabic numerals, and steel indicator hands, including a combination radial date and day scale at 9 o'clock, a moon phase with a combined running small constant seconds register at 6 o'clock and, a combination month and leap year at 3 o'clock, and there is a 30-minute chronograph counter with an included up/down power reserve indicator at 12 o'clock. It has a 42-hour power reserve at full winding, and it's water resistant to 50 meters/165 feet. The 14.7mm thick case, dial, and movement are all signed.

This A. Lange & Sohne 1815 Rattrapante Perpetual Calendar 421.025 has a mechanical manual winding A. Lange & Sohne caliber L101.1 movement. It's rhodium plated with Cotes de Geneve embellishment. It's constructed with 43 jewels, 631 components, a swan neck regulator, blued screws, 4 screwed gold chatons, and a monometallic balance that's adjusted for 5 positions. The mechanism oscillates at a frequency of 21,600 vph (3 Hz).

The extremely complicated A. Lange & Sohne 1815 Rattrapante Perpetual Calendar 421.025 was introduced in 2013.