Greater than 15% damage in stance, >50% health, or enchanted... Fact or Fiction?

I don't claim to be an expert regarding weapons (just saw my first vamp sword with a +4 mod), but I am really starting to doubt that damage mods for stance, enchantment, and >50% health above 15% even exist. I have seen a +20% mod with health <50% as well numerous "hexed" mods above 15% but never one for the more desirable situations.

Would anyone be so kind to post a weapon with a 15%+ mod either in stance, enchanted, or with >50% just to prove that they do indeed exist?

Thanks in advance.

I believe 15% for those are max... there used to have below 50% health for 20% and that was the only one... not sure if it is still around... However, for things like giant slaying... charr slaying... etc, you can get it above 15%