The cards yankeenz sells are legit, they are old Futera overrun cards - not good for the marketplace unfortunately when duplicates show up like this #0011, these should have never reached the marketplace but unfortunately when a company goes bust they try to sell off everything and there is no longer such thing as quality control.
You shouldn't have to worry about buying a sig from them Russell, I don't think i recall them ever selling signature cards, they only seem to have uncut sheets and redemption cards.