I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: none. tie tack/bar: 0.38" x 0.38" (3/8" x 3/8" or 9mm x 9mm). collar bar: none. I always try to point out any clear blemishes and condition.
The "B Monogram Initial Letter Vintage SWANK Tie Tack Lapel Pin" would be an excellent addition to formal or special occasion attire, as it features a classic design and durable materials for a long-lasting impact.