Here are a few more pics.
Thanks for the extra pictures.
That's a tough one to figure out, since there are around a dozen others listed but none of the others show a "Y" plant code, which always worries me, and they're spread out among 4 or 5 different plants. There are a few small differences among all of them but the main difference seems to be a solid-color lining in the 1998 bags and a Logo lining in the 1999 versions. Yours looks OK.