It was my understanding that Koro bought out Hancock traps. Have had issues with Koro's "hanging up" and not completely closing because the trigger binds up on the frame of that trap, preventing the trap from closing. Missed a beaver about two weeks ago with this issue. Only solution is to reset and hope the beaver comes back.
Called the guy from Koro several years ago, after explaining the problems that my company has had, my employees and I, have had, he states, wow, never heard of that happening.
At the time he stated he would send me some new triggers, that was again several years ago. Still waiting for them. I have about 10 Hancocks and Koro's combined total traps.
Have since moved on to Comstocks which are pretty good traps, for me anyway.
As the post above states Tomahawk has the Hancock. But after checking that out it states this on their website:
"KORO Live Beaver Trap: This clam shell style Live Beaver Trap is the same design as the Hancock trap which has been available since 1930. Constructed of a heavy duty aluminum frame and chain link mesh, this trap is built to last a lifetime. It weighs 25 pounds and folds to 6". This trap is..."
Yet there is a picture of the Hancock, that description clearly states Koro. I would be inclined to think Tomahawk has an old picture of a Hancock "stock photo" for their Koro's that they sell. But I could be wrong.
Would love to find some old Hancocks, they sure where reliable.