1973 Eisenhower Dollars
After huge production runs of Ike Dollars for the first two years of the series, circulation strike coins were only minted for government issued Mint Sets. This makes the 1973-P and 1973-D Ike Dollars considered the key date coins of the series with mintages under 2 million.
The San Francisco Mint produced 1973 Ike Dollars minted in 40% silver for special uncirculated and proof coins issues to collectors. They also produced clad proof versions for Proof Sets.