5 Pounds - Elizabeth II Train Crossing the Viaduct, Silver Proof

Alderney's legal authority to issue commemorative coinage stems from a 1987 Order in Council, a arrangement that has since made the island's mint program — operated entirely through the Royal Mint on contract — one of the more prolific in the British Crown Dependencies. The 2004 series of railway commemoratives was produced alongside a broader wave of Victorian engineering themes popular in that decade's collector market.

KM#98a is the silver proof variant of a base-metal issue, a pairing common to this period of Royal Mint contract work.