I'm a little confused by your model number, but let me try here, hogdog.
Shown in the photo are three of the 'Big and bad' Imperial and Schrades. To the left is the M7S survival, tang marked 'Imperial'. A take-off on the M7 bayonet which Imperial was one of the contractors for. Came about during the 'Rambo movie' years, what was that, mid-late 70s?
The center knife is a Schrade DBL2. Again, a take-off on both the M7 bayo and the Imperial M7S... Ths knife has some of the absolute sharpest serrations I've ever seen (felt- it drew blood) on any knife. The fine serrations near the tip is actually a file. Carbon steel, of course, just as the M7 / M7S is. The sheath is to the right, it has a neat sharpening stone afixed to the back of it. Otherwise, I find the sheath pretty much lacking.
The knife to the right is the BTO1.. the 'Extreme Survival'. It's got it all, the best parts of the M7S (pockets on the sheath, hammer and nail puller pommel, a decent saw-back, wire stripper notch, and the fine handle from the DBL2. It is made of hammer forged stainless steel. I will not bother here showing off the BTO1's brother, the 'bomb tech'; it is the same as the BTO, just has a chisel tip instead of a point and a slightly different sheath.
I bought my DBL2 back in 2000, brand new, so it was at least being made then. Maybe one of the other guys will know the correct dates.
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