Get a Niedermann Certificate of Authenticity for your painting (COA) for your Niedermann drawing.

For all your Niedermann artworks you need a Certificate of Authenticity (COA) in order to sell, to insure or to donate for a tax deduction.

Getting a Niedermann Certificate of Authenticity (COA) is easy. Just send us photos and dimensions and tell us what you know about the origin or history of your Niedermann painting or drawing.

If you want to sell your Niedermann painting or drawing use our selling services. We offer Niedermann selling help, selling advice, private treaty sales and full brokerage.

We have been authenticating Niedermann and issuing certificates of authenticity since 2002. We are recognized Niedermann experts and Niedermann certified appraisers. We issue COAs and appraisals for all Niedermann artworks.

Our Niedermann paintings and drawings authentications are accepted and respected worldwide.

Each COA is backed by in-depth research and analysis authentication reports.

The Niedermann certificates of authenticity we issue are based on solid, reliable and fully referenced art investigations, authentication research, analytical work and forensic studies.

We are available to examine your Niedermann painting or drawing anywhere in the world.

You will generally receive your certificates of authenticity and authentication report within two weeks. Some complicated cases with difficult to research Niedermann paintings or drawings take longer.

Our clients include Niedermann collectors, investors, tax authorities, insurance adjusters, appraisers, valuers, auctioneers, Federal agencies and many law firms.

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.