Banknotes and Paper exonumia photos [Risolto]

Some banknotes, often among the oldest, are no longer completely new, sometimes torn, partly burned, with holes, etc etc, or do not fill the entire space, so the background (of all kinds) is visible

However, in the recommendation      of the obverse and reverse photos of the Add or modify data of the banknotes page, there is no line 'Place your coin on a plain background, preferably a white sheet of paper…