I guess the "fade" is where the raised part of the medal has rubbed on the original pouch, probably making it unclear what the medal is like underneath, hence the ziplock bag to actually protect the pouch rather than the coin.
The issue I would be concerned about, is without the medal being in a capsule, both the pouch and PVC ziplock bag (is it PVC free?) may give PVC damage issues if storing long term...
NGC PVC Damage http://www.ncscoin.com/news//viewarticle.aspx?IDArticle=1445
Might be best to send for grading and subsequently fitted into a slab?
Nice medals though
Edit: added linky
The issue I would be concerned about, is without the medal being in a capsule, both the pouch and PVC ziplock bag (is it PVC free?) may give PVC damage issues if storing long term...
NGC PVC Damage http://www.ncscoin.com/news//viewarticle.aspx?IDArticle=1445
Might be best to send for grading and subsequently fitted into a slab?
Nice medals though
Edit: added linky