'83 TGS Vintage Lapel Pin/Tie Tack sorority fraternity pledge p38

I HAVE HUNDREDS OF TIE TACKS & BARS, COLLAR BARS, STUDS AND CUFF LINKS. cuff links: none. tie tack/bar: 0.45" x 0.37" (approx. 7/16" x 3/8" or 10.5mm x 9mm). collar bar: none. I always try to point out any clear blemishes and condition.