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Most knives lose value the second they’re discontinued. But a few? They go the other direction. These are the blades collectors chase down, even years later. Some earned their keep in war zones, others were just that well made. If you’ve got one sitting in a drawer, it might be worth more than you think. And if you ever see one in the wild for a good price, grab it—you might not get another chance.
Benchmade 710
The 710 had a long run and still left fans wanting more. It was the first Benchmade to feature the Axis lock, and that made it a big deal back in the day. Add in its slim profile and long blade, and it was a favorite for hard use and EDC alike.
Used models don’t last long when they pop up. Especially if they’re in D2 or M390. The 710 may be gone, but folks are still paying top dollar for one in good shape.
Zero Tolerance 0560
When Rick Hinderer teamed up with ZT, the 0560 was the result—and it hit like a sledgehammer. It’s big, overbuilt, and surprisingly smooth for such a heavy blade. Once they stopped production, prices on the secondhand market crept up fast.
Collectors love this one for its early serial numbers and unique 3D machining. If you’ve still got one in the box, don’t be shocked if someone offers more than you paid.
Spyderco Southard
The Southard was Spyderco’s first real step into the flipper world, and it was a strong start. With its titanium frame lock and Carpenter steel, it had a custom feel for a production price. That combo helped it build a loyal following.
Once Spyderco discontinued it, demand stayed steady—and prices went up. You’ll still see folks looking for one in good condition, especially with the original box and paperwork. It’s one of those early flippers that never lost steam.
Emerson SOCFK
The SOCFK (Special Operations Combat Folding Knife) wasn’t just a cool acronym—it was a true field blade. Built tough and meant for rough use, it blended the Commander’s blade with the CQC-7’s handle. For military guys, it hit the sweet spot.
Emerson only made these in small runs, and once they were gone, that was it. Today, they’re sought after by both users and collectors. If you’ve got one, it’s worth hanging on to—or selling at a premium.
Cold Steel Recon 1 (AUS-8 Version)
Cold Steel has kept the Recon 1 name alive, but the older AUS-8 models with the older Tri-Ad lock and slick coating have built a fan base all their own. They weren’t fancy, but they were dependable and easy to sharpen.
A lot of folks prefer the older blade shape and steel over the newer S35VN. That’s driven up prices for used ones—especially in good shape. It’s a perfect example of a budget tactical folder that aged well.
SOG Visionary I & II
The Visionary series never got the love it deserved while in production. But now that they’re gone, folks realize how smooth and practical they were. Lightweight, fast, and comfortable—everything you want in an EDC.
You won’t see them often, and when they pop up, they usually don’t last. Collectors who like overlooked blades grab these quick. And with SOG shifting directions lately, the older designs are getting more attention.
CRKT M16 Titanium
Before the M16 became a budget staple, there was the titanium-framed version—solid, sharp, and built to last. The flipper action was crisp, and it didn’t feel like a cheap knife at all. For many, it was their first “real” tactical folder.
These early models are getting harder to find. The combo of materials and the Kit Carson design keeps them desirable. If you see one that hasn’t been beat to death, it’s probably worth more than you remember paying.
*This article was developed with AI-powered tools and has been carefully reviewed by our editors.
