Special Cartier tonneau watch called "incuvee" is designed in solid 18 karat yellow gold (slightly rosy gold). It has a mechanical movement, adjustable medium brown honey colored leather strap, single deployant buckle, roman numerals and blue cabochon crown. Authenticated and verified by Cartier. Measurements: 32 x 26mm. Model Number: CRW81721052. Year: 1973. Pre-Owned.