ok, it's only an attempt to decode Guerlain's batches, somewhat difficult and complicate.

Roughly said, the very important thing however is NOT the exact year of production, BUT the historical period.

This means it's important to detect a perfume produced before 2010/2011 (IFRA Rules.... ) and, even better, before 1999/2000 (restriction of oakmoss, dismission of "animalic fixatives" such as real castoreum, real civet, etc, and replacement with their artificial substitutes).

This is a general consideration, not specific for Guerlain.

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**UPDATED in September 2013**:

Anyway, specifically for Guerlain, let's start and see:

**from 1967 to 1982 (zig-zag boxes, with "medallion") : up to 8-digits batches**

bar-code appears in 1988

green dot symbol appears in 1992-3

**Probably from 1980, until 1995 : AT LEAST 6 digits batch-codes **

(6-digits-batches starting with S,P,W,Y = 1985-1988

with U, M, D =between 1989-1991

with Z, J.... between 1992-1994)

**Since 1996 until 2001 : 5-digits-ONLY batch codes**

1996 5 digits starting with P

1997 5 digits starting with S example (SX 0 VR)

1998 5 digits starting with V example (VR 0 VR)

1999 5 digits starting with D example (DB 0 FS)

2000 5 digits starting with M

2001 5 digits starting with U (example: UT 01 K)

**since 2002: 4 digits batch code**

2002 4 digits starting with 2

2003 4 digits starting with 3

2004 4 digits starting with 4

and so on...

2005 = 5XXX = (example 5C01)

6XXX = 2006

7XXX = 2007

8XXX = 2008

9XXX = 2009

0XXX = 2010

1XXX = 2011

NOW restarting:

2XXX = 2012

3XXX = 2013

**Anyway remember this game it's only for curiosity: IFRA "restrictions" rules began, softly, in 1991, then worsened around 2000, and "ruined" completely from 2007 onwards.**

The real deal is knowing if a perfume is before 2007, or before 2000, or before 1990, so.... enjoy !!

Andre

Edited by Andre Moreau - 9/11/13 at 12:01pm