This is one of two instruments commissioned by Henry IV that survived the French revolution. The other is a violin (ID=2362).
"At each end of the back is a gold letter 'H' surmounted by the crown of France. Both designs are topped by laurel leaves. Geometrically spaced throughout the back are six flambeaux. Painted on the maple ribs is the Latin inscription: 'DVO PROTEGI TVNVS' (God preserve my tone). This motto progresses around the sides from left to right."
The History of the Viola, Volume 1, Maurice W. Riley, The History of the Viola, Volume I
Listed by Sotheby's as "by a member of the Amati Family, Cremona, Circa 1600".
Sotheby's Fine Pianos and Strings Auction Catalog, April 16, 1981, New York, Sotheby's, Sotheby's Fine Pianos and Strings Auction Catalog, April 16, 1981, New York, New York