Great Longsword, early 15thC

Longsword, early 15thC.
That heavy longsword has 5 fullers on each side of the blade and unique mark with one cross inside a double circle and second cross outside. It is a truly unique sword, not common design with complex geometry of the blade. Original is stored in Deutsches Historisches Museum, Berlin, Germany.

Reonctruction
My version of this sword is probably a few percent smaller, due to divergent data from various sources that could not be finally confirmed. Some important dimensions of this sword were not obtained at all (e.g. PoB), although most of them were known to me for a long time. Technical aspects were also an issue. Nevertheless, finally it is a reconstruction very close to the original in my opinion.
That blade was a challange. Fullers are not very deep and on the original sword they appear to be gently undulating on the lateral slope, becoming a secondary bevel of the edge. 
As for the pommel, I finally decided to place the round recess in the center, symmetrically. As I was planning to give it an insert, I thought the overall composition of this sword would be more consistent with the centered recess.
In the end, the final result surprised me very pleasantly. The sword is very maneuverable, good handling, high weight does not bother and the blade is stiff, although not like the hexagonal cross-sections of Passau swords. 
Despite its uniqueness and complex geometry of the blade, it is a typical combat longsword, so I did not make any additional decorations that would change this original character. I decided to make the handle simply comfortable and functional, without unnecessary decorations and as it turned out that this style perfectly fits the character of this great sword.

Measurements:
total length 1280mm
blade length 980mm
blade width 58mm
grip 250mm
crossguard 250mm
PoB 90mm
weight 1940g