This Must Ronde is the bigger size with a 30mm case and normal wear. The watch was just serviced, new leather band bars (Original) were installed and watch has original papers. 
 
Details:
 
Brand: Cartier
Model: Must Ronde 
Reference: ---
Year: 1986
Material: Vermeil
Dimensions:  30mm
Crystal:  Mineral Glass
Movement: Quartz 
Bracelet/Strap: Aftermarket Leather band and buckle
Box/Papers: No/Yes