A used banknoteA banknote (or ‘bill’ as it is often referred to in the US) is a type of negotiable promissory note, issued by a bank or other licensed authority, payable to the bearer on demand. More, which has not suffered any cuts, scrapes, tears or punctures, nor is it marked and presents a degree of soilingThe process of staining, usually by greasy materials sticking to the surface or by the absorption and adhesion of dust and particles to the cotton fibres of which the banknote is made. It is one of the main reasons for banknote deterioration and their subsequent destruction. More or wear considered acceptable by the central bank to be returned into circulation.