I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: none. I always try to point out any clear blemishes and condition. tie tack/bar: 0.47" x 0.44" (1/2" x 7/16" or 11.5mm x 11mm). collar bar: none.
The Moose Head Sterling Silver Vintage Screwback Tie Tack Lapel Pin v70 would be best suited in formal gatherings or events where elegant and stylish accessories are required.