It's been a while so i'm not an 100% sure.
However the lithograph is not a part of the "three treasures" that part I'm plenty confident of.
That one you're missing I think it's the armor ...
Ok now i'm not that confident but if i remember right the armor was the very first treasure you're supposed to get so i think you have to backtrack a bit
I really wanted to like this game but the models of everyone except for Shera just looks half-assed it's extremely distracting. It's like their entire budget for the game went to Shera then everything else was drawn by a 12 year old
