860, Broadway, Union Square, New York

An advertisement from J.F. Fradley & Co.'s Canadian distributors, Zimmerman, McNaught & Lowe:

Zimmerman, McNaught & Lowe - Toronto - 1882

J.F. Fradley & Co. - New York - 1884

J.F. Fradley & Co. - New York - 1889

J.F. Fradley & Co. - New York - 1902

J.F. Fradley & Co. - New York - 1902
Founded by Joseph Frederick Fradley in 1866. Fradley had served his apprenticeship as a Chaser under Wood & Hughes.
J.F. Fradley & Co. were exhibitors at the Exposition in Paris in 1889.
Joseph Fradley retired in 1902, but the business was continued by his son, George F. Fradley. The company existed until at least the mid 1930's.
For further details of J.F. Fradley & Co. including an example of their mark, see: http://www.925-1000.com/ax_Fradley.html
Trev.