Philadelphia is a city rather than a state. In the US, only states have governors while cities generally have mayors. As of 2016 the mayor of Philadelphia is Jim Kenney, elected in 2015. Before that the mayor was Michael Nutter.
Coins made at the Philadelphia mint did not have mint marks until the 1980s. Your coin was made at the Philadelphia mint.
The Mayors was created in 2004.
910 mayors
790 mayors
Ionia Mayors was created in 1921.
Mayors for Peace was created in 1982.
Mayor Nutter supports same-sex marriage and is a member of Mayors for the Freedom to Marry.
States have governors not mayors. Cities and towns have mayors.
Montvale mayors
The mayors term of office is 50 years
Global Mayors' Forum was created in 2005.