SYDNEY, AUSTRALIA: Vintage Energy Ltd (ASX: VEN), 50% interest holder and Operator of ATP 2021 (other interest holders: Metgasco Ltd, 25%; and Bridgeport (Cooper Basin) Pty Ltd, 25%) announces the signing of a Gas Sales Agreement (GSA) by the ATP 2021 Joint Venture parties (JV) and AGL Wholesale Gas Limited (AGL) for the sale of…