Mosti Mondiale - First digit is last digit of year, next 2 are the month and the last 2 is the day. 50807 = August 7, 2015
RJ Spagnols - First 4 digits are the year, next 2 are the month and the last 2 is the day. 20150807 = August 7, 2015
Winexpert - First 2 digits is the batch number. Next...