1998 Finest Football Forum

I am hoping that someone can answer a question I have about the 1998 Finest football cards.  I was adding to my trade list and noticed that some of the cards have a metallic back to them.  I'll use #114 as an example.  Card 112 does not.  I thought it might be the difference between series 1 and series two, but card #184 has a metallic back also.  Most of the other series two  have  a regular card stock back on them like # 112.  Are they a parallel that I can't find?  Is this just the way they were produced?  I looked at the scans and could not see any difference.

Might be the "no protectors" set?
https://www.tcdb.com/Checklist.cfm/sid/34655/1998-Finest---No-Protectors

I thought that the no protectors referred to the plastic coating being taken off of the front of the card.  These all have them still. 

No, that's not what No Protectors are. They were issued with a special coating and without the protectors. The backs usually have a different finish as well (they way one would be able to tell the difference between a peeled "Protector" vs. a "No Protector"). Maybe you should post images of one of them to the Mystery Card forum.

I thought that up until a couple of years ago.     For me I almost need to have one of each side by side to see the different.