I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. tie tack/bar: 1.86" x 0.31" (1-7/8" x 5/16" or 47mm x 7.5mm). I always try to point out any clear blemishes and condition. collar bar: none. 0.25" = 1/4" or 6mm - pretty small for standard button holes.
