Complete 4 Coin 1945 Mercury Dime Set P, D, S & Rare Micro 'S'. Add the last-year-of-issue 1945 Mercury silver dimes from Philadelphia, Denver, and San Francisco to your collection – plus get the sought-after "Micro S" variety. When the San Francisco Mint used two different punches in 1945, it created the smaller "Micro S" mint mark in addition to the regular one. Yet, it was unknown until two years later, when an eagle-eyed collector discovered this unique key variety in 1947. Now you can own the "Micro S" issue, plus its companions – the Denver, Philadelphia, and "Normal S" San Francisco issues – in one complete set. These four different coins are must-haves if you've ever hoped to build a complete date and mint mark collection of 90% silver Mercury dimes. And at this price, you won't want to wait!Please Note All Backer Cards may have slight differences but will be very similar if not identical to the one in the photo