Not to be confused with Avon the door to door makeup company, Avon of Belleville was started in Belleville, Ontario by the Mazer brothers, also known for jewellery signed under their own names. (Confused yet?)
Backs are marked Avon in script, quite different from the jewellery Avon did produce. This piece is unusual in that the stones are unfoiled and that it is gold washed sterling. Very Marie Antoinette in appearance to me, though on a much smaller scale!