1918 mark 1 trench knife real ?
-
Firechief501
- Posts: 42
- Joined: Wed Jul 03, 2024 4:41 am
1918 mark 1 trench knife real ?
Good afternoon , I recently bought a knife collection from an older gentleman who said it was “time to start getting rid of things “. I purchased an old Al Mar 1005 in its original box , probably early 80s , I purchased some Gerber mark IIs from him , some old Kershaw knives in the boxes , and a few other gems . At the end of our transaction he said he had one more knife he wanted me to have for free … it was this trench knife . He said an older gentleman gave it to him approx 40 years ago for some work he did . I am certainly no expert on military items . I tried doing research on my own and so far I have been unable to prove or disprove its authenticity . The blade does measure exactly 6 3/4 “ on the dot . I’ve seen many knives that appear identical to this one specifically the lettering that claim to be genuine , and sold for approx $1200 and up . I would love to hear any thoughts from this group on opinions of this appears to be an authentic piece or a repro . Thanks in advance for all the expertise !!! Being that his collection I bought contained some really nice ,, higher end knives , I’m hoping for this one to be a legitimate piece .
- Ripster
- Silver Tier

- Posts: 5036
- Joined: Tue Apr 07, 2020 6:37 pm
- Location: Wi.USA
Re: 1918 mark 1 trench knife
It looks like the real deal based on some research. Here’s a pic and info from Mr Silveys book of U.S. Military knives .Firechief501 wrote: ↑Sat Aug 09, 2025 9:03 pm Good afternoon , I recently bought a knife collection from an older gentleman who said it was “time to start getting rid of things “. I purchased an old Al Mar 1005 in its original box , probably early 80s , I purchased some Gerber mark IIs from him , some old Kershaw knives in the boxes , and a few other gems . At the end of our transaction he said he had one more knife he wanted me to have for free … it was this trench knife . He said an older gentleman gave it to him approx 40 years ago for some work he did . I am certainly no expert on military items . I tried doing research on my own and so far I have been unable to prove or disprove its authenticity . The blade does measure exactly 6 3/4 “ on the dot . I’ve seen many knives that appear identical to this one specifically the lettering that claim to be genuine , and sold for approx $1200 and up . I would love to hear any thoughts from this group on opinions of this appears to be an authentic piece or a repro . Thanks in advance for all the expertise !!! Being that his collection I bought contained some really nice ,, higher end knives , I’m hoping for this one to be a legitimate piece .
JP
- Ripster
- Silver Tier

- Posts: 5036
- Joined: Tue Apr 07, 2020 6:37 pm
- Location: Wi.USA
-
Firechief501
- Posts: 42
- Joined: Wed Jul 03, 2024 4:41 am
Re: 1918 mark 1 trench knife
Awesome !!! Thank you Ripster !! I just measured the overall length and it is exactly 11 1/2 “ as the material you supplied suggests . It also has the copper appearance on the sheath as the literature suggests that it should . I’m getting pretty excited !! Thanks for sharing this info sir !!
- Ripster
- Silver Tier

- Posts: 5036
- Joined: Tue Apr 07, 2020 6:37 pm
- Location: Wi.USA
Re: 1918 mark 1 trench knife
You are most welcome. Please let us know if you verify one way or the other . Don’t see them for sale often!Firechief501 wrote: ↑Sat Aug 09, 2025 9:39 pm Awesome !!! Thank you Ripster !! I just measured the overall length and it is exactly 11 1/2 “ as the material you supplied suggests . It also has the copper appearance on the sheath as the literature suggests that it should . I’m getting pretty excited !! Thanks for sharing this info sir !!
JP
- 1967redrider
- Gold Tier

- Posts: 21469
- Joined: Wed Feb 02, 2011 4:23 pm
- Location: Alexandria, VA
- Contact:
Re: 1918 mark 1 trench knife real ?
That is a really nice one, hardly handled too. The blacker this version is, the more pristine. 

Pocket, fixed, machete, axe, it's all good!
You're going to look awfully silly with that knife sticking out of your @#$. -Clint Eastwood, High Plains Drifter
CHRIST IS KING
You're going to look awfully silly with that knife sticking out of your @#$. -Clint Eastwood, High Plains Drifter
CHRIST IS KING
-
Firechief501
- Posts: 42
- Joined: Wed Jul 03, 2024 4:41 am
Re: 1918 mark 1 trench knife real ?
Thanks Redrider . That’s the one thing that makes me a little nervous about this thing is its condition . It really is in damn nice , pristine condition . Been reading more and more online and I still can’t find anything to disprove that it is authentic and not a repro .
- 1967redrider
- Gold Tier

- Posts: 21469
- Joined: Wed Feb 02, 2011 4:23 pm
- Location: Alexandria, VA
- Contact:
Re: 1918 mark 1 trench knife real ?
Oh, it'sFirechief501 wrote: ↑Sun Aug 10, 2025 4:06 pm Thanks Redrider . That’s the one thing that makes me a little nervous about this thing is its condition . It really is in damn nice , pristine condition . Been reading more and more online and I still can’t find anything to disprove that it is authentic and not a repro .
This guy literally wrote the book on Mark I Trench knives.
Pocket, fixed, machete, axe, it's all good!
You're going to look awfully silly with that knife sticking out of your @#$. -Clint Eastwood, High Plains Drifter
CHRIST IS KING
You're going to look awfully silly with that knife sticking out of your @#$. -Clint Eastwood, High Plains Drifter
CHRIST IS KING
-
Firechief501
- Posts: 42
- Joined: Wed Jul 03, 2024 4:41 am
Re: 1918 mark 1 trench knife real ?
Thanks Redrider ! You’ve been a great help to me sir . I appreciate everyone jumping in and being so helpful , and kind . Now I’m feeling super jazzed to own such an awesome piece of history and being able to add it to my collection . You guys are great , thank you !!!
-
eveled
- Posts: 2582
- Joined: Sun Oct 29, 2017 9:37 pm
Re: 1918 mark 1 trench knife real ?
Wow! Wonderful example.