The other version is the 1972 S Silver Proof Eisenhower Dollar which came in proof sets or brown boxes with a gold eagle seal ('Brown Ikes') - only 1811631 of these mirror-like silver proof coins were produced. These were special mint condition coins sold to collectors. The common version is the 1972 Brilliant Uncirculated silver Eisenhower Dollar (as depicted above) which came in the blue pack/envelope with a blue seal ('Blue Ikes'). There are two major versions of the 1972-S Eisenhower Dollar - both of them have a silver-clad composition with a 40% silver content.
What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.):
