i just checked all mine and i dont have any numbers on them. I got all mine last year in April. Maybe something to do with when they were manufactured?
Melissa - you may be onto something there - I brought mine last year too - probably between January and... uh.. maybe april or May? Before we switched to Pigeon anyway..
mmmmmm. I use avent bottles and i bought mine in 2006 for first daughter and none of mine have any numbers on the bottom???? I have bought more new ones in 2007 as well for dd #2 and those have no numbers either. I am confused..... I think i will await for some scientific research before buying any new ones, it could be some scam or something so everyone spends more money????? Who no's
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