I've been hunting this old ghost town just across the state line and today I found this pin. It reads The University of Minnesota on the front and is stamped "Solid Gold" on the back. My questions are; How old is it? And what Karat is "Solid Gold"?
I didn't find your exact pin but a few similar were listed from the late 40's to the mid 60's. Many simply said "vintage" which to me means not older than I am or post WWII.