"The Black Blade" Quest 7 - Silver Chest?

By Vaapad, in Descent: Journeys in the Dark

In the Black Blade quest, number 7 in the base game, the quest map shows 2 copper chests (areas 1 and 3) and a gold chest (area 7). Should one of the coppers be silver? Should there be a silver chest somewhere else? The chest guide lists the contents of the silver chests, so it seems like one should exist...