I was recently blessed to acquire a 1991 Special Projects catalog. What a blast from the past and what a treasure trove of data from a period of Cold Steel's history that is woefully lacking!
An interesting feature of the catalog itself is that it is a combination of a Special Projects catalog in one direction, describing Special-Projects-only items
and then if you turn it over and flip it upside down, the other half is a standard Cold Steel catalog featuring the regular production line items.
I had forgotten that the Special Projects catalog used to feature the occasional military surplus items that Lynn Thompson deemed worthy of inclusion. Also, in this edition, Cold Steel was liquidating a couple of Western Cutlery models purchased from Western as the company went out of business.
The fact that Cold Steel was testing the fillet knives is interesting to me, since years later Cold Steel would go on to offer its own branded version of the Western fillet series, presumably made by Camillus Cutlery after Camillus acquired the Western brand and tooling (ref.,
https://www.bladeforums.com/threads/mini-history-of-cold-steel-srk-and-recon-tanto.1567867/page-2).
Anyway, on to a couple of rare gems from the catalog. Apparently 1991 saw the introduction of the ER1. I never knew it, but there was a first generation of the knife that used Spyderco's serration pattern rather than the Cold Steel pattern appearing on later versions.
I believe it was actually called the G.I. Commando.
You were absolutely correct about this knife's name. It seems that the former dealer I purchased mine from was mistaken about what Cold Steel called it. We finally get to clear up the mystery of the short-lived G.I. Commando!
Also, long ago in this thread, Lapedog asked this question:
Is there any way we can see a picture of how the linerlock adjusts?
At the time, I wasn't sure what you were referencing. Now I see that you were talking about this:
Unfortunately, even after reading Cold Steel's original description of the adjustment mechanism, I'm still not positive about what it refers to. I won't take apart my knife, but here are the best photos I can manage of the liner lock's interior.
I don't see any cam. But as you can hopefully tell from the pictures, the liner lock nests underneath a steel plate. That plate is what the bolt securing the pocket clip passes through. Perhaps you can change the tension on that bolt to adjust the pressure on the plate, which, in turn, adjusts the position of the lock as it rests against base of the blade?
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One other rare gem recently turned up on eBay. These aren't my photos or listing, but the knife is a limited edition Recon Tanto that I never knew existed. It's pretty cool to see.
-Steve