![5" used Japan 21-045 Explorer MM-III boot knife in a nice condition with a clip-on sheath - AAA Auction and Realty 5" used Japan 21-045 Explorer MM-III boot knife in a nice condition with a clip-on sheath - AAA Auction and Realty](https://d3j17a2r8lnfte.cloudfront.net/aaa/2022/11/medium/swWmRpgB7wOtIFy9BuCuDvhm.jpeg)
5" used Japan 21-045 Explorer MM-III boot knife in a nice condition with a clip-on sheath - AAA Auction and Realty
![OKD a thing? I don't know anything about this knife other than my dad gave it to me and said it belonged to my grandfather during WW2. I would like to know anything about this knife so I can validate this story. Other side of the knife reads EXPLORER NIGHT ... OKD a thing? I don't know anything about this knife other than my dad gave it to me and said it belonged to my grandfather during WW2. I would like to know anything about this knife so I can validate this story. Other side of the knife reads EXPLORER NIGHT ...](https://preview.redd.it/j87kn3m0p9461.jpg?width=1080&crop=smart&auto=webp&s=52e92a9c74d7026ab7437488eaf2e2ac83256615)
OKD a thing? I don't know anything about this knife other than my dad gave it to me and said it belonged to my grandfather during WW2. I would like to know anything about this knife so I can validate this story. Other side of the knife reads EXPLORER NIGHT ...
![Vtg Rare Explorer 21-047 Night Raider Survival Boot Knife Dagger & Sheath Japan for Sale - Fleetwoodmac.net Vtg Rare Explorer 21-047 Night Raider Survival Boot Knife Dagger & Sheath Japan for Sale - Fleetwoodmac.net](http://www.fleetwoodmac.net/vintage/img/g/IxwAAOSwdcxgNA02/s-l1600/Vtg-Rare-Explorer-21-047-Night-Raider-Survival-Boo.jpg)