Oil paintings, water colours, acrylics, drawings both ancient and modern are all capable of being copied. The best way to recognise them is to learn how they are made. Our 1,300 page book on this subject...
In a fanfare of publicity, ebay announced on their website that they were against the sale of fake handbags. ( After beings fined £30 Million in court for selling them in the first instance ) But good old ebay...