On a whim, while feeling a bit seasonal, I made a Grand Stollen Knife of Attnam, based on that of Dresden (
link), and put it in the golden chest in the treasury.
It's a unique two-handed scimitar with extra primary and secondary volume, extra damage, and less accuracy, and it's made of gold with a silver handle (Dresden's is silver plated).
I mostly added it so that there would be something existing in the game that says "unbelievably inaccurate". It can be SoCMed if you manage to steal it, but even with an arcanite or octiron blade it still needs enchantment to be a viable weapon. With valpurium or mithril it also needs very high arm strength.
For some reason the shopkeeper would only pay about 400 gold for it.