If you're a pocket knife collector, Case sort of rules the roost (at least in numbers of knives purchased/traded). Most of the Case knives I own and have handled are pretty well made. I have heard the quality may vary some from year to year.
Since I only collect Case knives and don't use them, I haven't had a problem with the shield that Keith mentioned. I have seen quite a few used Case knives which are missing their shields. My using knives are other brands, so this hasn't been a problem for me.
Hope you are happy with the Case folding knife you purchased. You'll have to let us know after you've had it and used it a bit.