The Oakeshott Type XVIIIc was a relatively rare and specialized sword type, similar to the Germanic XVIIIb in many respects and in use in the same period, but with a significantly wider starting point for the blade.
While they were big swords, they handled a lot better than they might at first appear to, and were often used in such a way that no matter how the blade angled, the point stayed stationary - pointed directly at an opponent and daring them to close the gap.. Naturally with such a point, even a casual thrust would be devastating, but it was no slouch in the cut either - having all the benefits a wide and thin blade can offer.
Almost all surviving examples come from a single source, the Arsenal of Alexandria - where many medieval European swords were gifted to the Mamluk rulers of Egypt to seal the peace treaty of 1414 (though the peace, unlike the swords, only lasted 10 years).
As it was a relatively rare sword type, with few extant examples other than those salvaged from the Arsenal of Alexandria (and its recently rediscovered twin, the Harriet Dean Sword), there are correspondingly few replicas available on the sword market - and those replicas that are not surprisingly are based on a single example.
MyArmory has an excellent in depth article on Type XVIII swords and the various sub-types 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
You can also read an interesting article here in 'the nerdist' about the Harriet Dean Sword which disappeared in 1943 and resurfaced in 2016 in Texas of all places, whose re-discovery inspired Ronin Katana's Chris Scoggin (a native Texan) to replicate it with their Euro Sword # 3.
I hope this information on Oakeshott Type XIIIc Swords has been helpful. To return to Oakeshott Typology Made Easy from Oakeshott Type XIIIc Swords, click here