A. LANGE & SÖHNE very fine and extreme rare, astronomical platinum gents wristwatch 1815 Rattrapante perpetual calendar, manual winding, reference 421.025FE, on both sides sapphire glazed, case back 6-times screwed, original leather strap with original platinum-deployant clasp, solid silver dial, display of hours, minutes, constant second, chronograph rattrapante, power reserve indicator, perpetual calendar with display of day, date, month, moon phase & leap year, correction at the sides in case inserted, very fine, rhodium plated movement, calibre L101.1, fausses cotes decoration, from Hand engraved bridges & vices, diameter approx. 41,9 mm, original box, papers & setting pin, condition 1-2, property of a collector

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