I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. tie tack/bar: 1.35 x 0.53" (1-5/16" x 1/2" or 34mm x 13mm). collar bar: none. I always try to point out any clear blemishes and condition. GOOD - used, showing age appropriate signs of use such as minor scratches and minor wear, no cracks or missing pieces.
This product would be a great fit for vintage car collectors and collectors of General Motors memorabilia.
