Great Find! In the archives a news clip of this sign found in Newburyport MA in 1916, it was in the City Hall 1858 and went to auction in 2015 sold for 4,000.
CARVED AND PAINTED TRADE SIGN, 18th/19th century;
painted with a coat of arms and bearing the inscription All Sorts of Bread made and sold here, by Tho.s Tannatt; dated on verso 1774; with wrought iron hanging support; sign: 45 x 26 1/2 inches Grogan & Company. Mr. Grogran stated the cosigner provided very little information: "We acquired it when my mother (Ad Browne) of Dover died in 1990. I have no idea how or when it came to her. That's all I know. "
From Boston Post Friday April 7 1916
From Representative men and old families of southeastern Massachusetts: containing historical sketches of prominent and representative citizens and genealogical records of many of the old families, (Volume 3).
Thomas Tannatt son of Thomas Tannatt, a resident of Newburyport Massachusetts where was engaged in the baking business On sign was printed an heraldic device or coat of arms and the words All sorts of Bread and sold by Thomas Tannatt 1772 The sign referred to was displayed at a fair held in the City Hall Newburyport April 12 1858 He removed to Boston during the Revolutionary war and there also was engaged in the baking business he died in Boston and is buried on Copp's Hill He sold his dwelling house bake house and land in Newburyport Nov 12 1793 The wife of Thomas Tannatt was Mary Gallishan and among their several children were five daughters and two sons Abraham
The sign was displayed at a fair held in the city hall of Newburyport on April 12, 1858. Tannatt removed to Boston during the Revolutionary war, where he continued his baking business. He died in Boston and is buried on Copp's Hill. He sold his Newburyport house and bakery in Nov. 12, 1793.