Bonython v Commonwealth

This case concerned an appeal to the Privy Council from a decision of the High Court of Australia. The appellants were holders of Commonwealth inscribed stock, which had been issued in exchange for Queensland Government debentures originally issued in 1895. The debentures stipulated that the principal sum was payable on 1 January 1945, at the option of the holder, in Brisbane, Sydney, Melbourne, or London. The core dispute revolved around the currency in which the debenture holders were entitled to be paid, particularly given that by 1945, the Australian pound (£A) and the British pound (£B) had diverged in value, with the £B being higher.

The legal issues before the court were primarily: (a) whether the debenture holders, having failed to provide the required notice by 1 July 1944, had lost their right to demand payment in London; and (b) more fundamentally, what was the intended currency for repayment of the debentures, specifically whether "pounds sterling" referred to British currency or the currency of Queensland at the time of issue. The appellants argued they were entitled to be paid in London in English currency, or the equivalent in Australian currency if paid in Australia.

The Privy Council held that the meaning of "pounds sterling" in the debentures had to be determined as at the date of their issue in 1895. At that time, while the money of account and substantially the money of payment were the same in Queensland and Great Britain, Queensland was a self-governing colony with its own distinct monetary system. The mere use of the term "sterling" did not automatically imply the currency of Great Britain, especially as the Queensland Government was issuing the debentures under its own law. The court concluded that the substantial obligation of the debenture was the same regardless of the place of payment, and absent any circumstances to the contrary, the Government of Queensland must be presumed to have referred to its own monetary system.

Consequently, the Privy Council determined that the obligation of the debenture would be discharged by the payment of £1,000 in Australian currency if payable in Australia, or the equivalent in English currency if payable in London. The court found it unnecessary to definitively rule on whether the appellants had lost their right to demand payment in London due to insufficient notice, as the central question of the currency of payment was resolved by interpreting the debenture's terms in light of the proper law of Queensland at the time of issue. The appeal was dismissed.