As the printing process got more refined, so did the symbols used in musical notation. A standardized G-clef can be seen as early as the 17th century. In the 19th century inexpensive sheet music encouraged amateur musicians – and brought music to the people. 

ERS9530
Finish: Solid brass, electro-plated with non-tarnishing silver finish, ear wires are hypo-allergenic
Dimensions: Hangs approx. 2.25" (Gift Boxed with Provenance Card)