Thanks to thermoluminescence, it is possible to differentiate authentic excavated items from recently manufactured fakes with reasonable accuracy. How do you know when a work of art was painted? Unfortunately there are no affordable direct methods for dating pigments, except in some cases as we will see later. For instance, it is possible to date the wood support of a panel as well as canvas. The three most important dating techniques which are useful for the analysis of works of art are: Thermoluminescence TL , Dendrochronology DC , and Carbon 14 C
How to Paint Over an Unfinished Oil Painting
How Much Is My Old Painting Worth? Research, Appraise, and Sell - HobbyLark - Games and Hobbies
Organic compounds can easily be detected under UV light. This effective tool detects later restorations that appear darker than the aged original varnish layers. UVF can reveal the presence of natural resin varnishes, as these often fluoresce under UV light. It is also possible to identify any retouchings on top of an aged varnish, since oil paint and newer varnish do not fluoresce under UV.
Decorative painting inspires lesson in dating art
Most everyone knows that handmade nails are older than machine made nails. But could you identify a handmade nail if you saw one? And could you separate an old nail from a reproduction nail?
One of the questions I often get asked by customers and also other dealers is how to identify whether a work is an original antique oil painting or a reproduction. The back of a painting will generally yield more information than the front, so the first thing to do is turn it over. Older original canvases tend to darken with age. Also, many canvases, around half of those we hold here, are relined.