These 31mm watches are the rarities of the size chart, while the 26-34-36 are common, the 28 and 31mm's are quite hard to get throughout the year. This watch is complete with box and papers dating from 2011. The watch was detailed and result is very good.
 
Details:
 
Brand: Rolex
Model: Datejust Lady
Reference: 178240
Year: 2011
Material: Stainless Steel
Dimensions:  31mm
Crystal:  Sapphire
Movement: Automatic 2235
Bracelet/Strap: Original Bracelet
Box/Papers: Yes/Yes