Kandinsky's work went through several distinct periods, including a figurative period in the early 20th century before he transitioned to abstraction. If you have an authentic painting of a clown signed by Kandinsky, particularly from his figurative period, it could hold considerable value. The specific value of a painting by Kandinsky depends on various factors such as the size, medium, date of creation, provenance, and its overall condition.
A signed painting of a clown by Vassily Kandinsky could potentially be worth tens of thousands to several hundred thousand dollars. For a more precise valuation, it's recommended that you consult with experts, art historians, or reputable art appraisal firms. They can provide an accurate estimate based on the specific details and characteristics of your painting.