I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. tie tack/bar: 0.71" (approx. 11/16" or 18mm). collar bar: none. 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 collectors of antique coins, particularly those interested in Danish currency from the mid-20th century.