Well I am not really an expert like some of you guys so i gave the info that was included with the chips. i bought them because i liked them and actually would still like to keep them and am sad to auction them but i set out to start up a business no matter what and at the end of the day i could probably buy them back in a few years. it is nice to know the dates of them i probably should have asked on the board in the first place, i thought they were older to be honest and am a bit disappointed, however they are still a nice collection so i hope someone appreciates them. i bought them a long time ago so am hoping i got the price about right