I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. I always try to point out any clear blemishes and condition. tie tack/bar: 0.74" x 0.38" (3/4" x 3/8" or 18.5mm x 9.5mm). collar bar: none. GOOD - used, showing age appropriate signs of use such as minor scratches and minor wear, no cracks or missing pieces.