I've got a very used USN MK2 for sale. Not in the best shape ever, but not a piece of you know what. 
blade has been sharpened a lot and has some rust on it. It's marked, KA-BAR, USN MK2. Has original plastic sheath, which does have a crack on the back. Looks like it was repaired with glue at one time. $80 shipped. No returns please. Conus sales only and please no PO boxes. Please email me with any questions you may have. Euroross@hotmail.com
blade has been sharpened a lot and has some rust on it. It's marked, KA-BAR, USN MK2. Has original plastic sheath, which does have a crack on the back. Looks like it was repaired with glue at one time. $80 shipped. No returns please. Conus sales only and please no PO boxes. Please email me with any questions you may have. Euroross@hotmail.com