Mad Dog ATAK II, super rare B series knife.
Only 10 of these knives were made by Mad Dog.
Quoting from Kevin AKA Mad Dog McClung:
This is the rarest of the military SEAL ATAKs.

There were only ten of these made. They were produced on the cusp of the design and marking changes mandated by the [...]

NOT MUCH TO SAY, SUPER, SUPER RARE KEVIN “MAD DOG” MCCLUNG AXE.  KEVIN HAS SEEN PICTURES OF THIS AX AND HAS CONFIRMED THAT THIS IS ONE OF HIS VERY EARLY WORKS.  IT HAS HIS OLD STYLE LOGO THAT I TRIED TO PHOTO, BUT THE MARKING IS VERY SMALL. KEVIN TOLD ME THAT THIS IS PROBABLY [...]