We perform Johann Niedermann art authentication. appraisal, certificates of authenticity (COA), analysis, research, scientific tests, full art authentications. We will help you sell your Johann Niedermann or we will sell it for you.

Johann Niedermann as an 18th century German painter. He was mainly known for his portraits of European nobles. Still wondering about an 18th century painting in your family collection? Contact us…it could be by Johann Niedermann.