Conversely, many items brought before the experts are without commercial value, if not outright counterfeits. They are seldom shown in the broadcast episodes, to spare embarrassment for the individuals involved, although counterfeit objects are sometimes included, to give experts an opportunity to explain the difference between real and fake items. Value is not the only criterion for inclusion; items with an interesting story attached, or of a provenance relevant to the show's location, will often be featured regardless of value. An episode commemorating the end of the First World War and featuring personal mementoes, included no valuations. All items are appraised, although most appraisals take place off-camera, with only the most promising items (around 50 on an average day) being filmed, of which about 20 appear in the final programme.