Original prints are traditionally signed in pencil by the artist. They are numbered to indicate how many prints there are in the edition and to identify the individual print. This number appears written as a fraction, for example: 34 / 75. This is called the edition number.
Electronic Product Code (EPC) A radio frequency identification code (RFID) attached to a product which contains a wide range of information unique to that item including the manufacturer, SKU, product information and serial number when applicable. This allows tracking a particular item throughout all stages of the supply chain.
If you're planning on selling your home, you must provide an Energy Performance Certificate (EPC), free of charge to potential buyers. An EPC gives information on the energy efficiency of a property using A to G ratings, with A being the most energy efficient and G the least efficient.