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

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

Getting a Lange 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 Lange painting or drawing.

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

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

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

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

The Lange 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 Lange 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 Lange paintings or drawings take longer.

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

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

Joseph Lange was an 18th century Austrian painter. He was known mainly for his portraits, and most famously, painted portraits of Wolfgang Amadeus Mozart and his wife, Constanze. This unfinished portrait of Mozart would have depicted him at the piano. Lange also painted many other portraits of prominent Austrians of the era. Still wondering about an 18th century European painting in your family collection? Contact us…it could be by Joseph Lange.