A paint in which the pigment is held in an oil-based solvent. Traditionally, the oil is walnut, linseed or poppy and is slow drying which enables the artist to rework parts of the work with relative ease. Oil Paint was used by artists who are considered the 'Old Masters'.

An original print is one printed from a matrix on which the design was created by hand and issued as part of the original publishing venture or as part of a connected, subsequent publishing venture. For fine art prints the criteria used is more strict. A fine art print is original only if the artist both conceived and had a direct hand in the production of the print. An original print should be distinguished from a reproduction, which is produced photomechanically, and from a restrike, which is produced as part of a later, unconnected publishing venture.