I got the game from GOG.com, I have all three games, in fact, though I haven't played Beyond Divinity, yet.
Thank you for your answer, I had already found that chest in the tower, once I took the tower, however, I'm going back to before I took the tower, to try to get everything I can find.
The idea being, if I can find any more Set or Elder items, I want to have those when I take the tower; and if I have to sell stuff without disenchanting it, then I want to make sure anything I find with high-level enchantments (especially HP/Mana regeneration, shock and healing aura, and fire damage on weapons).
It seems also that I should save potion recipes for high-level health/mana potions and collect the ingredients they need, rather than selling those ingredients, and then making more of those potions to use during that first dragon-form battle (since I don't see to be able to regenerate health during that battle, and when you make potions, it seems to use up the formula scroll).
Anyway, thanks again, and I'll be looking forward to that answer from Raze.
PK
