In addition to releasing its main collection watches each year, Cartier has recently been launching capsule collections under the “Privé” name, with each year seeing a famous silhouette get some special treatments and reinterpretations. This year it’s all about the Tonneau, that neither round nor square shape that Cartier first started using over a century ago in 1906. Ahead of SIHH 2019, Cartier is teasing two variations, the Tonneau Large (seen here) and the Tonneau XL Dual Time Skeleton.

There are two Tonneau Large models, one in rose gold with a champagne dial and one in platinum with a silvered dial. Both measure up at 46.1mm long, 26.2mm wide at the center, and 8.8mm thick, meaning they’re a little long and relatively thin too. They feature blued hands, applied Roman numeral indexes, and the same curved profile that helps the watch sit better on the wrist. The platinum model is a numbered edition of 100 pieces with a ruby cabochon in the crown, while the rose gold model and its sapphire cabochon are not strictly limited.