McMahon v Gilberd and Company Limited - [1955] NZLR 1206

Contract — Formation — Bottles — Aerated-waters Manufacturer Offering to Refund Deposits paid by Consumers as Reward for Return of Empty Bottles — Such Offer made to Consumers, and not to all the World — Manufacturer not bound thereby to reward Bottle-dealers on Return of Bottles — Right to Reward, a Chose in Action — Need for Proof of Bottle-dealers' Title, as Assignee of Consumer's Right of Refund in Respect of Particular Bottle or Group of Bottles, before Bottle-dealer entitled to receive Reward of Deposit paid by Consumer.