The 1958 Proof Set (Buy on eBay) experienced a decline in sales when compared to the prior year. The total number of sets sold was 875,652, representing a drop of…

Demand for the United States Mint's annual Proof coinage offering reached a temporary peak with the 1957 Proof Set (Buy on eBay). Sales increased by more than 86% above the…

All of the 1956 Proof Sets (Buy on eBay) were originally issued in the new "flat packs." This simplified style of packaging had been introduced in the middle of the…

The 1955 Proof Set (Buy on eBay) continued to experience a rapid increase in the number of sets produced and sold by the United States Mint. This year included an…

In 1954, the popularity of the United States Mint's Proof Set continued to expand. The 1954 Proof Set (Buy on eBay) achieved total sales of 233,300, representing an increase of…