These cards are usually referred to as Charles VI, but Stuart Kaplan1 refers to them as Gringonneur. Both names refer to the early, and false, belief that they were painted in 1392, approximately 100 years too soon, as a present for the French King Charles VI. They currently are in the Bibliotheque Nationale, Paris.
Card images found at Wikimedia Commons.
The Encyclopedia of Tarot, Stuart R. Kaplan. pg. 111-116.