If a product is made in 2015 it would end in a 5. The first digit is always the # of the batch (A=1st batch, B=2nd batch etc.) as there may be multiple batches within the same month. The second digit is the month 1-9 are January to September, A=October, B=November and C=December. The last digit is the last digit of the year. So A76 could mean either the first batch from July 2006 or the first batch from July of 2016. Same as A75 could mean either the first batch from July 2005 or the first batch from July of 2015. Generally you can tell from the product itself though if it's 2015 or 2005. HTH!