23mm case.

Swiss. Circa 2010. 18K yellow gold diamond-lined case. The Tank Américaine watch features an elongated case with a more pronounced curve than the original model. It playfully updates the geometry of the lines, retaining the rectangular form while alternating between round edges and angles. On this example the addition of diamonds to the case creates a more impressive presence. 23mm case. The watch was found to be running at the time of cataloguing. It has not been tested for timekeeping accuracy and may require adjustment.