Lee's axe seems to be a Norwegian A-axe, possibly with the original handle (very scarce!). The A-axe was often nicely engraved and one of these with the original shaft/handle is a really great (and rather valuable) find.
While ordinary axes usually only strikes a blow, the Norwegian battle axe both strikes and cuts, thereby being more effective and creating more damage than an axe with a straight handle - at least in theory.
I have a little page on Norwegian battle axes at
Norwegian Battle axes. If you click the pictures, they get enlarged.
Trond