I agree. It's interesting how modern the design looks for the 1800's.
CompoundKid wrote: Mon Nov 03, 2025 10:51 am That patent is very interesting and a treat to see. Thank you Killgar!
You're welcome
I've searched a few times over the past few years trying to find the oldest OTF auto knives, but I've never seen a Hibbard brand version, or any others that match the age and design.button_man wrote: Mon Nov 03, 2025 11:41 am .
The 1866 Dirk Knife is intriguing, and brings two questions to mind -- first, was this knife ever manufactured?
And second, are any known to currently exist?
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The oldest single-action OTF's I've seen are German and Italian trapdoor knives. The oldest double-action OTF I've seen is the "Colorado Sprint". One of those is featured in the movie "The Kremlin Letter" (pic below). The movie was released in February 1970, but was filmed in 1969, so D/A OTF's are at least as old as 1969. I don't know if the originals were called "Colorado Sprint", or if the name came later (etched on the blades, pic below).

