Up for sale is a New, Gucci Watch, Model 6400, All Stainless, Replacement Case Back. Comes in Gucci's original packaging. Easily changed by almost any jeweler. 

Features:

• New Gucci, all stainless, Case Back for the Ladies 6400 watch.
• Comes in the manufacturer's original packaging. Part Number: 152.6400.2
• Will fit the 6300 also.