Colt "Cobra" models (repost); I think I'm missing one variation. Got the second from the left several years ago in a group I bought here, and for as beat up & hard-used as it is, it's still a great user. Locks up with no play in any direction.
Over the last two or three years, I've managed to acquire several more in the series. The attention to detail is amazing, the grinds are even, the etches are clean, and there are a bunch of odd little details about these that make them interesting: each of them has a half-stop detent, they open-&-close like the pivots are teflon, the laser-cut serrations are very efficient, and they look like something out of a sci-fi movie.
The ugly stepchild to the right is the same model made by Arrowhead Manufacturing in North Carolina(?), after production of this model (and others) was moved back to the U.S. It's shameful to think the black one is made in the U.S.A. The quality, fit-&-finish, and operation are mediocre at best, and it won't lock unless I flick it open really hard. The pocket clip will not hold any tension either.
This same basic model is now made in various anodized colors and with various etchings on the blade, for paramedics, firemen, police, and military personnel. None of the newer models can compare to these old Solingen models -not even close.
Left to right: CT49, CT49S, CT50, and CT50S. The embarrassment on the right is called... I don't know, and I ain't wasting time trying to find out.
And I think these fit the criteria for this thread as well. (I actually just posted this pic last night in another thread) These are U.S. Schrade Old Timers, each with at least one blade modified to a sheepfoot/semi-Wharncliffe type blade. I don't think they'd fully qualify as either style, so they're kind of a hybrid of both types. I use them specifially for whittlng & carving. U.S. Schrade carbon steel is my favorite steel. I actually enjoy just sitting & sharpening these when needed.
This project started with the 77OT - one blade tip broken off, one bent. I convertd both to the style described above. The next was the 34OT; All three blades rusted shut. Soaked in mineral oil, got them all open, converted two blades to S/SW-type and one into a screwdriver. Then came the 858OT, same situation. Busted spay blade converted to a long S/SW type. The little Stockman has one blade converted.
~Chris