This is a Vietnam War-era Gerber Mark II MK2 combat fighting knife with a cant blade. It was made By Gerber in 1967 and in the nicest shape of many I have seen.  The knife is USMC soldier named, indicating it was likely used by a member of the United States Marine Corps during the conflict. This knife is a piece of militaria and a collectible item. I have never cleaned the handle or attempted to, leather I have wiped down time to time. In above average condition. If you need more information just ask.