This is not correct, of course; you might very well own something without the right to sell it. Immediately cognizable examples are your liver, stock options be

This is not correct, of course; you might very well own something without the right to sell it. Immediately cognizable examples are your liver, stock options before maturation, a house that is part of your bankruptcy estate, shares in a company during a lockup period, your mom's wedding ring that your sister would strangle you if you sold, dangerous munitions that you cannot sell to Russians, etc. Ownership is a bundle of rights that is not uniform across property or time.