Vintage 3M Company Gold Tie Clip 30 Years of Service Award. The Clasp is made of 1/20 12K Gold Filled with a 10K Yellow Gold hanging 3M Emblem with three pear-shaped Ruby stones. The item has a Tie Bar/Clip/Clasp style but could be worn as a broach or lapel pin. This piece is in very good condition as seen in the photos. This item is fairly rare from what I can tell, I couldn't find another one but did see some similar items sell in this same price range.