I Tested the 1978 Proof Set Value: What I Discovered About Its Worth in Today’s Market
When I first stumbled upon a 1978 proof set, I was instantly intrigued by the story each coin seemed to tell. These carefully crafted pieces of history capture a moment in time, blending artistry with the enduring legacy of American currency. But beyond their visual appeal, I wondered—what truly determines the value of a 1978…