The acronyms and some of the jargons can become overwhelming and confusing, hence why the first post in the sticky'ed (
made up word) CPK
Encyclopedia is recommended reading, remembering and learning reference material for for both newer and longer term CPK'ers (
another made up jargon). The pattern which you are referring to is listed under "Double Edge Fighter" which
AR-Trvlr
who went to great lengths to compile the reference material can perhaps add the DEF acronym. Further, just like the original UF and the subsequent UF2, there are also an original DEF and the subsequent DEF2. Lastly, there was also another variant known as the "
*Dagger-Grind Utility Fighter" based on the OG-UF which has been as elusive as hens' teeth for some of us oldies. Perhaps the aforementioned good gentleman (Mr. AR-Trvlr) can also add that one under the Unique Knives on the bottom of that list.
* I just dug this up from an older sales thread all the way back in 2014. I think that Nathan made some of these variants back in '14/15. Sadly most of the older photos are now gone because of the server transition which this Site went through back in 2019/2020? and also the original photo hosting site which Nathan was using. I think that
B
Burke
(ETA: maybe also
Gusbuster
?) owns one of these rare pieces if he wishes to post a photo or two.
I will try to see if I can find one of those pics using Google photo caches!