This listing is for a set of 4 vintage Yale University “300” lapel pins, featuring the classic Yale blue enamel with the “Y” and “300” marking. These pins were likely issued for a special Yale milestone, society, or event, and are not commonly found today — especially as a full set of four. Included: ✔ 4 identical Yale “300” pins ✔ All with original metal clutch backs Condition: • Good vintage condition • Light wear from age • All clutch backs included and functional Perfect for: • Yale collectors • Alumni • Display pieces • Ivy League memorabilia fans