An Interesting trade.
A user for a User might be toughest.
On the other hand a Safe Queen Badger for a user AK is a great trade to get a user AK.
In other words if the Knives are to get used by the new owners then both got a pretty good deal, these knives Beg to get used.
The Slotted handled Badger is a mis-understood knife, INFI, A-2, never know unless Jerry say's after grind/Sharpening test, either way a great knife, and the most commonly sold older Busse Badger.
The Smooth Bolts, you pretty much know are A-2, not absolutly, but for the most part, and the Hole type fasteners, while might have gotton on an A-2 Badger sent in for refinishing, are allmost all INFI.
Most people like the feel of the hand finished Badger and Steel Heart handles.
But I would have gone the same way, if I had not already had an AK, I think at least one of each is a "Good" thing to have.