I failed to mention before that there is another type of Highland two-hander. near as I can tell it is also called a (CDL) but I'm not 100% on that. It has been dubbed today as a 'Clamshell Claymore', because of it's two clamshell-like guards over the hilt. It seems to have the same general weight and blade type as the other CDL's that we are more familiar with.
Heres a few antiques:
http://www.myarmoury.com/albums/disp...lbum=41&pos=69
http://www.myarmoury.com/albums/disp...lbum=41&pos=70
http://www.myarmoury.com/albums/disp...lbum=41&pos=71
http://www.myarmoury.com/albums/disp...lbum=41&pos=72
http://www.myarmoury.com/albums/disp...lbum=41&pos=73