(I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: none. 1" or 26mm). collar bar: none. 0.25" = 1/4" or 6mm - pretty small for standard button holes. 0.38" = 3/8" or 9mm - also fits standard button holes.
The "Choir Harp Music Vintage Lapel Pin z05" would be a perfect fit for music-loving team members or individuals interested in unique, vintage-inspired decorations for their clothing.