Collectors looking to transcend the typical Royal Oak chronographs and tourbillons are in luck.
The most complicated Audemars Piguet pocket watch in private hands will go under the gavel at Sotheby’s New York this December. Affectionately nicknamed Grosse Pièce, or “Big Piece” in English, No. 16869 features a huge 80 mm yellow-gold case that houses no less than 18 remarkable complications. It is expected to sell for between $500,000 and $1 million at the upcoming sale, giving…

