There are two varieties, the first has no stars below the eagle on the reverse and the second variety has stars below the eagle. Variety 1, is no stars below the eagle and they were all produced in 1916 and 1917. In 1916 just the Philadelphia Mint was used but in 1917 all three mints made them. The original designed exposed Lady Liberty's breast. The public did not like having her breast exposed so in 1917 the coin was re-designed to cover her breast. The redesign became known as Variety 2, which the public excepted. On both designs the left arm of Liberty is upraised, uncovering a shield for protection. Liberty's right hand holds an olive branch for peace. The designers initial, an M appears to the right of the date. On Variety 2 the stars were redesigned and the eagle is higher. In 1925 a depression was made on the pedestal where Liberty stands. The date is below her feet. On the earlier issues, the dates wore off because they were too high and not protected by the coins other features. The new recessed dates lasted longer as a result of this change. From 1917 to 1924 Variety 2 was the pedestal date and the change to a recessed date started in 1925 and lasted until 1930. In 1918 the San Francisco mint had an 8/7 Variety and in 1928 there is a large and small mint mark on the San Francisco quarter. No proof coins were officially issued but the Variety 1, dated 1917 has specimen striking's that are known to exist. Last year, I won an auction for the 1917 variety one. I also won a bunch of other items but when the package arrived the quarter was missing. A note was inclosed that said it would be shipped later. After 2 months and a couple of very polite conversations I received this coin in the mail. Two grades higher than the coin I was bidding on. I was very pleased and still am.