Looking over some very dark discolored # 11 CCI caps I just received I was curious as to when they were manufactured. Here is what I learned about reading the lot #: The first letter is the month, A=Jan., skipping the letter I. The next two numbers is the day of the month. The next letter is the year running through the alphabet skipping the letter I and O. The info I came across had "A" starting in 1995 through "Z" ending in 2018. I'm assuming that they would have started the next run with "A" as 2019. So that would give my lot # A19E301 a manufacture date of either Jan. 19, 1999 or Jan. 19, 2023. Looking at them 1999 is more believable!
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