It's 229 years. Founded at Tun Tavern by Captain Mullins in 1775, I think.
Tun Tavern, Philadelphia, 1775
14.10 hrs 1st Marine is given his shilling and sworn in.
14: 25 hrs 2nd Marine is sworn in and then given his shilling. Told to go stand by the 1st Marine sworn in.
1st Marine to 2nd Marine: "We never did it like that in the OLD Corps!"
A little old soldier humor there boys and girls in memory of all the good young jarheads in VMO-2 who saved this young soldier's ass in 1965.