Original U.S. WWII USN Mark 1 Robeson ShurEdge No. 20 Fighting Knife with Wood Pommel and Leather Scabbard Japanese Flags Below this are two different

Below this are two different Waffenamt inspection markings

with some areas of light staining and peppering due to the case hardened finish being much less resistant to oxidation

its original operator

The barrel and bolt numbers were were definitely added to match the receiver

Also there is a War Department stamp with Broad Arrow and a 1912 date

Original U.S. WWII USN Mark 1 Robeson ShurEdge No. 20 Fighting Knife with Wood Pommel and Leather Scabbard Japanese Flags Below this are two differentOriginal Item: Only One Available. The Navy MK1 knife was used as both a utility knife and a fighting weapon. While some undoubtedly saw combat, particularly with Naval Aviators, these blades were mostly used for everyday functions aboard ship and ashore. The Mark I knives were Navy issue throughout WW2 and remained in inventory through the Vietnam war. They were purchased in huge quantities so replacements were not needed for many years. From a