Thread:Katlovr/@comment-29650568-20170105191559/@comment-33762881-20170107051815

It could be a collection that combines with others to make an artefact. There are also one-off items that form collections and none of these will show up if you search for them.

You can check here if you remember any of the items. http://the-secret-society.wikia.com/wiki/List_of_One-Off_Item_Quests