This is a nice pair of matching insignia for the stand-up collar of a uniform for the California High School Cadets.
Each insignia measures 1 1/8" wide x 1 1/8" tall, with "H.S.C." in lieu of a Glory.
"The California Cadet Corps was created by an act of the Legislature on 5 April 1911. The California High School Cadets program was designed to prepare young men for service in the California National Guard. In 1935, the Legislature changed the organization's name to the California Cadet Corps." - (WIKIPEDIA)