Among the most sought after old violins are those from French craftsmen. Each and every year a number of old violins are discovered and are brought on to the open market. In some markets (such as eBay), old violins are in greater demand and frequently sell for thousands of pounds.
As the varnish and wood improve by age, old violins are continuously sought after in the market today. The tone of an old violin is often more beautiful than that of a new violin. Its also worth mentioning that a lot of what you are paying for with an old violin is its history and condition, tone can often be secondary.
To find old violins use the search box at the top of this page.