Sword shoulder-belt-plate found in Canada

Object Number: 
Overall: 2 5/8 x 1 7/8 in. ( 6.7 x 4.8 cm )
engraved: (1), on front of plate: "BUTLERS/GR/RANGERS" (Butler's Rangers; foliate GR is the royal cypher of King George III)
Brass sword shoulder-belt-plate; slightly curved, oval plate with the name of its corps and a British crown above a foliate cypher engraved on front; two studs and hook on back.
Gallery Label: 
This plate was worn on the sword shoulder-belt of an officer of Butler's Rangers, a Loyalist corps raised during the early years of the American Revolution. They were recruited in 1777 from Tryon County, New York by Colonel John Butler, and in alliance with Iroquois bands raided the frontiers of New York and Pennsylvania. The plate was found at Butler's Barracks, a wartime headquarters for the Rangers located at Niagara-on-the-Lake in Ontario, Canada.
Due to ongoing research, information about this object is subject to change.
Creative: Tronvig Group