Camillus Cutlery Co. pocket knife.  Genuine bone!
 
A very nice original WWII knife. Would clean up nicely I only wiped it down. 
 
I believe they called these engineer models and were general issue and included in survival kits in fighter and bomber aircraft.
 
No cracks or chips in the scales.  All blades open.  All have great snape except main blade.  Still has its badge and bail.
 
Location D2-31