Paintings and works on paper
The most commonly misjudged category in any house, in both directions — the grand gilt frame over the fireplace that is a decorative copy, and the small dark panel in the back bedroom that is not.
- The back, always, before the front. Labels from galleries, exhibitions, framers and shippers are a record of where a picture has been.
- Stencils, wax seals, chalk numbers and old inventory tags on the stretcher or the backing board.
- A signature is the least reliable thing on a painting. Signatures are added, and good pictures are often unsigned.
- Works on paper in a drawer or a portfolio — prints, drawings and watercolours are stored flat and forgotten far more often than paintings are.
- Anything you were told was 'a copy' by someone who was not qualified to say so.

