WW2 Meritorious Service Pin

Vintage WW2 'War Price & Rationing OPA Meritorious Service' pin. Manufactured by B.S.CO. N.Y. This small peice of American history measures at 1/2in x 7/16in, 2.34g. Based on oxidation, manufacturer, and the minor age spots; I believe the material is silverplate over brass. Very nice condition and fully functional; see photos for details!