Swords in Art -- what is this?

[ALEX]

Ariel, there are also 2 examples in the Astvatsatryan "Caucasian Arms" book, from the 15thC Russland. Their "bayonet-like" tips are not recurved as in the painting... the later example from the Hermitage seems to be later development of the form with more developed recurve... The forms of the handle and crossquard also conform to the 16thC period. I believe the author of the painting depicted the sword based on observed sample(s) of that time.
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Here is the image of Hermitage sabre. The obviously stylized painting may refer to similar sword, notice the similarities in the blade and handle forms - almost pomeless handle, short crossguard, slight recurve to the blade. IMHO the similarities are quite evident to be an imaginative depiction.