Patek Philippe. A Very Rare "Night Flowers Iris" Platinum Wristwatch with Cloisonné and Paillonné Enamel DialModel/Reference: Calatrava Iris/ 5077P-087Movement No: 5.641.269, signedCase No: 4.563.509Year: Circa 2014Calibre: 240/119, automaticDial: Black enamel with Iris motif, signed Case: 38mm, platinum, transparent case back, signed Strap: Endangered species, double folding clasp, signedAccompaniments: Patek Philippe box and certificate注脚百達翡麗，「Calatrava Iris」5077P-087型號，非常罕見鉑金自動上弦腕錶，備夜間鳶尾花圖案掐絲及金箔琺瑯錶盤，年份約2014。附原廠錶盒及證書。Exemplary of Patek Philippe's rare handcrafted series, the present lot Reference 5077P depicts three Iris flowers and a few fireflies glowing in the dark night. Very thin gold wires (0.1mm) were used to separate the enamel colours, as one may notice the shimmery sparkles within the dial giving life and dimension to the painting. Fourteen opaque and translucent enamel colours were used and fired approximately nine times in a kiln to create this superb dial. This showcases the highest level of skills and craftsmanship, typified by Patek Philippe. Cloisonné enamelling is an ancient decorative technique that involves the laying of gold wires in intricate designs with the negative spaces filled with enamel. Enamel is a vitreous substance based on silica sand, coloured by adding metal oxides. The enamel is crushed to a fine powder and mixed with water to make a paste. According to Patek Philippe, after application and once dry, this paste is fired in a kiln at temperatures exceeding 800°C, fusing to the metal base of the dial and becoming extremely hard and stable. Depending on the intricacy of the design, a model can return to the kiln up to 12 times.Due to the complexity of the process and the skills required to craft such a dial, this timepiece is very limited and unique. This timepiece is highly sought-after by discerning connoisseurs with an appreciation for this artistry.