Autograph letter envelope signed (H MATISSE), with handwritten NICE, FRANCE return address and MIREPOIX, ARIEGE (France) stamped postmark, and 1940 date stamp on envelope obverse (to verso of frame). Envelope front also has green French 1 franc REPUBLIQUE FRANCAISE Iris Type postage stamp, issued between 1939 and 1944. Includes photo in middle age of Matisse (1869-1954), French artist, printmaker, and sculptor, regarded, along with Pablo Picasso, as the defining artist of early 20th century visual arts, responsible for significant developments in painting and sculpture. In 1917, he relocated to Nice, from whence this envelope was originally mailed. Presented in a decorative matte and gilt wooden frame. 1985 B. ALTMAN & CO. (NY) receipt with authenticity note affixed. Good overall condition with normal wear to frame. Measures 6 1/2 in. x 4 3/4 in (photo, sight), 5 1/4 in. x 2 1/2 in. (envelope, front of frame), 3 1/2 in. x 5 1/4 in. (envelope, verso), 16 in. x 11 in. (framed). Hill Auction Gallery in house continental USA shipping $85 plus insurance.