dior nail brightener|Dior nail glow uk The first and third numbers represent the month and the second and last number represents the year. Example date code: SP0065. Date code decoded: SP = France, 06 = 6th month, 05 = 2005. 1980s – 1990s: Beginning in 1982, Louis Vuitton added codes to every item to indicate when and where it was made. Subscribe