It only says where it is from on the chip itself.
I got mine at Newegg also, and from what I can remember, the batch # and the date seems to be the same as mine, and mine is from Costa Rica.
I had problems overclocking it above 130MHz FSB. But after some modifications and work, i got it upto 150Mhz. It will boot into windows2000 at that speed but will give errors in Prime95.
so right now I have it at 133MHz FSB and prime95 running for about a half day now.