This illustration of a viola by J.F. Guidantus was published in The Strad, August 1982. The following text is extracted from the article accompanying the photographs:

In the June 1982 London sales, among the sought-after instruments at Christie's was a J.F. Guidantus 1737 viola, which predictably exceeded its estimate by realising £21,600, for how often are you to find a lovely looking 18th-century viola in the popular 16 5/16 inchs size coming for sale?