The original square calendar watch was inspired by a historical piece created by Audemars Piguet in the 1940s and 1950s, the reference 5514. Only 22 pieces were made, and only 7 pieces have appeared publicly across the three metals combined. With its distinctive tear drop lugs and compact design, the 5514 is a clear predecessor to the Quantième Perpetuel Carré, born in the 1990s. A highly limited series of elaborate gem-set pieces were made in this time period, such as the present lot, with gem-encrusted bezels and dials. This reference 25756 lacks the lugs of other examples, and is a possibly unique configuration.

This particular example, bearing case number 1, with its matching sapphire and diamond siblings, was likely made for a VIP client and stands out with its dazzling diamond and emerald-set bezel and full pavé diamond dial, as well as elegant mother-of-pearl subdials. The quarter hours on the bezel are calibre-cut emeralds, while the interior hour markers are round brilliant emeralds, all accented by an emerald cabochon crown.

Offered in outstanding overall condition, it’s an audacious and vibrant choice for the collector.