The "last shilling" framing references Britain's decimalization of February 1971, when the shilling ceased to be legal tender as an independent denomination — though it briefly survived as the five new pence piece. Tristan da Cunha, a British Overseas Territory so remote it has no airstrip and receives supply ships only a handful of times annually, issues commemorative coinage through the treasury arrangement but has no independent monetary circulation of its own.
The "last shilling" framing references Britain's decimalization of February 1971, when the shilling ceased to be legal tender as an independent denomination — though it briefly survived as the five new pence piece. Tristan da Cunha, a British Overseas Territory so remote it has no airstrip and receives supply ships only a handful of times annually, issues commemorative coinage through the treasury arrangement but has no independent monetary circulation of its own.