This stamp can reveal the time and country of manufacture. Here's a guide to what those letters and numbers mean. No Date Code Stamp If no datecode can be found anywhere on the inside of your Louis Vuitton bag or wallet, there may be two reasons for this. The item could have been manufactured before 1987. Or, if the inside lining is of a soft material, the date code can be worn off. Early 1980s Louis Vuitton started stamping some bags in the early 1980s. A date code from this time period could consist of 3 or 4 numbers. The first 2 numbers represent the year with the latter numbers representing the month of manufacture. Using the example up above 834 , we know that the date code represents 19 83 in the 4th month. Again, the first 2 numbers represent the year and the latter numbers represent the month the bag was made. The 2 letters represent the location of where the item was constructed. Please refer to the country codes below for corresponding letters. The date code in the above picture reads 8907 VI. The I is obscured in the image, but it's there. This date code stands for 19 89 in the 7th month of the year. The bag was constructed in France, as VI represents a factory located in France. The 2 letters represent the country of construction. The 1st and 3rd number represent the month of the manufacture, while the 2nd and 4th number represent the year. Using the image above as an example, FL1003 stands for United States due to the FL. The 2 letters once again represent the country of construction. The 1st and 3rd number represent the week of manufacture, and the 2nd and 4th number represent the year. Using the above example CA4171 , we know that this item was made in Spain due to the CA. It was also finished in the 47th week of the year 20 11. Louis Vuitton Country Code Letters France - A0, A1, A2, AA, AAS, AH, AN, AR, AS, BA, BJ, BU, DR, DT, DU, CO, CT, ET, FL, LW, MB, MI, NO, RA, RI, SA, SD, SF, SL, SN, SP, SR, TJ, TH, TN, TR, TS, VI, VX Italy - BC, BO, CE, FO, MA, PL, RC, RE, SA, TD United States - FC, FH, LA, OS, SD, FL Spain - CA, LO, LB, LM, LW, GI Switzerland - DI, FA Germany - LP Just because an item has a date code, it does not mean that the bag is authentic. Example: A bag with date code FL1011 stands for France November 2011, but the item has a made in Spain stamp instead. In this case, you KNOW that the bag is counterfeit. Louis Vuitton introduces new country codes over time. For more on authenticity, check these.