Check the listing for details. Guernsey - Vintage £1 Pound Banknote - N018270. Listed at 2.95 USD. The Guernsey £1 pound banknote from the Elizabeth II era is a rare and collectible item for those interested in British banknotes. This vintage note, with serial number N018270, represents a piece of European history from the Channel Islands. With an uncertified certification, this unique piece showcases the rich heritage and culture of the region.