What happened when I pulled the pin was I saw it. It is a Biaxial cam lock. The pin - serrated, striated, false gates, and it was holding a devil's pitchfork, laughing at me, saying "hit me with your best shot".

I have some other Biaxials, so since you say the mortices are easier, I will check it out. As Medeco goes, I have a classic cam, biaxial IC in a mortice, biaxial KIK , biaxial mortice, and the biaxial cam that I disassembled today. I reassembled it for now.
In the beginning of December, I will be able to apply for access to the advanced forums. As I do not have access yet, I have avoided asking questions on these open forums. Have quite a number of high(er) security locks that I want to learn to open, but will bide my time. I am still able to learn a lot from these public forums, and am able to help others whose learning has been along different lines than mine. Still plan on doing that after I get access.
Still plan on working with the better locks on my own for the time being. Just thought some of you would get a kick out of my response to seeing the pins. Even my ASSA Twin 6000 did not catch me as off guard as the pins on this lock.
Just when you finally think you have learned it all, that is when you learn that you don't know anything yet.