The forgotten Santos, the Ronde, is a gorgeous little piece looking like a small Patek from afar and very well proportionned. The watch works well and case remains unpolished. 
 
Details:
 
Brand: Cartier
Model: Santos Ronde
Reference: 1561
Year: Unknown
Material: Stainless Steel
Dimensions:  29mm
Crystal:  Sapphire
Movement: Quartz
Bracelet/Strap: Vintage NOS Leather Band
Box/Papers: No/No