There are some attributes which increase the monetary value of items, but add nothing to their practical value. If there is nothing listed in the stats, then such items would not do much for you equipped.
For example, I found this near the end of the game, worth 50,000 gold. Don't ask me why...
Silver Long Dagger Of Mater Warriors
Durability 10
Damage 9-31
+4 Strength
