Sorry Chris, nothing for you this time, but I am keeping my eyes open.
I googled matchette and none of the images look like this one. For some reason I think I saw a photo of a similar knife included in one of the 25 pdr manuals....I'll have to check at work tomorrow.
Just remembered, there is some marking on the blade: ArtBrockvilleCanada. Does that mean anything to anyone?
edited to add:Looked at a blowup of the photo and it is Smart Brockville Canada. Found some info on them here:
http://yesteryearstools.com/Yesterye...fg.%20Co..html