The Oakeshott Type XX Swords represent the end of an era and were the last of the two handed fighting swords ever made as the late middle ages transitioned into the Renaissance.
While they share many of the characteristics of other Great War Swords, they represent the final stages of experimentation with two handers like this with regards to the fullers, specifically, type XX swords all have three fullers - one long one in the middle and two shorter ones to either side. This configuration, plus the general size and style, makes them relatively easy to identify, compared to many other swords in the Oakeshott Typology, which at first glance, may appear to fit two or more possible categories.
There remain a few extant Type XX Swords, including one that was in the personal collection of Oakeshott himself, but perhaps not as many as other Great Swords - due in part, to the narrow definition of this type and partly because more remain to be discovered..
Surprisingly, neither of the big two medieval sword makers who specialize in high end, accurate reproductions - Albion and Arms & Armor, make a Type XX (though Arms & Armor can make a custom one upon request).
But one relatively historically accurate replica is found in a series of swords not known for sticking to historical swords as you will see below.
MyArmory has an excellent in depth article on Type XX swords here which explains their history and lists some high end reproductions and images of actual antiques.
And of course, you can - and should - read more about these swords and all the others in the Oakeshott Typology in his book, Records of the Medieval Sword
I hope this information on Oakeshott Type XX Swords has been helpful. To return to Oakeshott Typology Made Easy from Oakeshott Type XX Swords, click here