Mint issued proof sets for the year 1960 include 5 proof coins, the cent through the half dollar.
The 1960 Small Date Proof Set gets this connotation because the "6" in the date has a small blunt point. Hence the "small date" designation. These Flat Pack Proof Sets come housed in their original mint cellophane pack with separate sealed compartments for each coin, within its manila envelope. Some original envelopes do not have a date on them but are the correct years.