Unused, never been in a car, never had oil in it. Bought it just like this (taped holes and filter installed). So there's not even dust in it. Does have some minor 'shelf abuse', which is to say there's some scuffing on a few surfaces.
The Patrick tank is basically $1200 for the tank/filter/neck combo. I would normally list this at $1500 because it's so much better. But I'd like this to move on to a new home. So....
Price $1200 + free shipping.