Maciejowski Bible falchion, 13thC.

This is my interpretation - one of possible variants I suppose - of the weapon illustrated in 'Maciejowski Bible', created in years 1240–1250 - also called 'Crusaders Bible' or 'Morgan`s Bible'. This is unique type of hooked falchion, sometimes called 'umbrella'.

Measurements:
lenght 820mm
weight 1130g
blade lenght 645mm
blade thickness from 5mm
blade width from 41mm at the base to 114mm near the top
point of balance 210mm from the hilt

Characteristics:
It can be used with one or both hands.
The blade is stiff and I can cut very precisely, very good handling.
Weapon is balanced near the center - so, it has power with cutting - similar to axes balance.
This seapon is very dangerous - I`m sure about that. You can easly use spikes on the back of the edge also.
The grip is comfortable enough, and designed to be safe and not lost easy this weapon in action - if you hit strong - the hooked end will stop the grip in your sweaty, slick hands in battle.

My reflecions:
When we see all illustrations from Morgan`s Bible, analyze them - we will see that the man who made them was very talented person and very precise - accurate in all historical details of armor, even belts, scabbards, horse equipment, etc... he certainly have seen all of this stuff with his own eyes. We not see in museums such weapon like this one, so it could be some kind of artistic exaggeration about this falchion - but when I see other details - I can`t find no other mistake or intentional invention of this weapon -he just don`t need to create something new - fantastic - in my opinion. he could use on his pictures many other 'real' (mean known from museums today) weapons together with simple swords , spears and axes... he chose this - why? it is not illustrated in hands of some misbeliever or fantasy creature - but in hands of armed man in battle - few times. I think - it had to be something like this - but not very popular weapon. That why there is no finds today - exactly like this one falchion.
The spikes at the back site of edge are functional and sharp - their purpose is - IMO - puncturing helmets, chainmail and other armor parts.
Why the grip end is hooked? it is easier to make that kind of end by forging thicker end and hook it - than install separate pommel. second reason is for hand protection, similar as sabres has or some falchions - but not from the hilt. it could be also some helpfull detail while carrying - but in my opinion this is not important and not safe way of carrying, especially without ant scabbard...
this is my INTERPRETATION of Maciejowski Bible falchion - not exactly and just what I see - but I agree that I took precisly the shape of the blade, proportions from the pictures.
I have added some details according to my experience and research on medieval weapons from this period.
There is one more thing - this weapon is scary with its unique shape - and was scary enough for those people - that could be important factor in my opnion - useful in battle ...