As I understand, there are ONLY three of the Busse axes in existence. All three are different from one another and I can't find pics of the third. I think these two are the only ones to have had pics taken.
I know not where the first one is but I'n sure that a certain old Hog still has the second and has been quoted saying, "...if your waiting for it to go up for grabs, DON'T!! I love it, use it and Will take it to the great beyond, so keep that in mind!!"
I can't find specs for them but it is bigger than a SHBA.

As for the PH specs are,

Model - Paul's Hatchet CG;
Blade - 76.20mm(3")
Thickness - 6.35mm
Width - 64.50mm
OAL - 234.95mm(9.25")
Steel - INFI steel at 58-60HRC
Handle - Micarta
Weight - 399.60g(13.51oz)
Original pricing - 197.00$
Warranty - Unconditional Lifetime;