The product is a circulated £1 one pound banknote from the States of Guernsey, featuring the signature of D P Trestain. This note belongs to the Guernsey denomination and was issued during the reign of Queen Elizabeth II. It is a piece of British currency from the Channel Islands, specifically Guernsey. The banknote is uncertified, making it a collectible item for those interested in British banknotes and coins.