This is bugging me... Could someone give me info as to what this key is?

Its from Italy and made for a key chain or a necklace. St.Christopher.

Agree, merely a religious medal, made in a key form.

( key is not cut so it is obvious not a key to use)

Would take some thought to figure each image as to what scene it is. But obviously a Catholic medal. Your local priest most likely could give more meaning to each scene

There are several on eBay right now, that are very close.

http://www.ebay.com/itm/RELIGIOUS-St-Christopher-MULTI-MEDAL-TRAVEL-PROTECT-Key-Ring-SILVER-PLATED-/140673681058?pt=AU_CulturalReligious&hash=item20c0ce06a2#ht_500wt_715

This is an Italian key made in copper silverplated
Depicting several Christian Saints and Virgins
Saint Christopher
Mary Help
Our Lady of Mount Carmel
Sacred Heart of Jesus
Mary Immaculate
Saint Joseph
It measures 2" tall (50 mm.)