Third quarter 19th century.
Very good overall condition, each with expected wear, each lacking pincushion to underside of beak, one example lacking the top post of the clamp nut.
4 1/2" HOA.
Provenance: The Mildred Jarvis Collection, Kennesaw, GA. Steel example: Purchased from Bob Slawsky, Windermere, FL, 3/10/1995. Brass example: Purchased from Dotty's Depot, Bradenton, FL, 9/29/1989.