I found an amulet at the bottom of the catacombs with a 'Recuperation Time 5' attribute, but do not recall seeing this on any other armour, except that morphed by swapping inventory files without the items.000 file (there are a couple screenshots in the Lost Items topic).
Since it doesn't appear to cause a problem, I wouldn't worry about it.

The screenshot function is ctrl-F11, though it does not work during cut scenes or conversations.