(I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. 3/4" or 19.5mm). I always try to point out any clear blemishes and condition. 0.25" = 1/4" or 6mm - pretty small for standard button holes. GOOD - used, showing age appropriate signs of use such as minor scratches and minor wear, no cracks or missing pieces.
