*The Julian date is laser etched into the bottle at time of production. It is located on the side wall, approximately 1cm from the bottom of the bottle. The first digit is the year of production, the next three digits will represent the day (i.e. 001 is the first day of the year, 365 is the last). e.g. January 1st, 2017 will appear as L7001. B1 simply indicates the production line.