This is a nice grouping to the same man of Civilian Conservation Corps Collar Insignia.

SCARCE CCC Collar Discs - still retain their pristine interwar-era gold-plating. "These one-inch metal discs identifying unit or branch of service were originally intended to be worn on the standing "choker" collar of the World War I Service Coat. During the Great War doughboys took to pinning them on their overseas caps; by 1918, caps came with a prefinished hole to accept the stud of the disc. After 1925 the discs migrated to the lapels of the new Service Coat. CCC collar discs appeared almost immediately in 1933."

CCC Cutout Insignia converted into a tie clasp for a 3" wide tie (looks to be in-keeping with the following historical note:) "Images of the CCC cutout pin on the uniforms of enrollees during their term of service are vanishingly rare. One suspects the pins may have been bought more often as souvenirs to wear after service than for use in camp."