The hilt is of a X-XI century type, the blade is narrowing to the end too much for a sword of that age. But still... I doubt that Yermak, a Cossack ataman, was a collector of some sort, while different swords were used during his lifetime. It was already the age of firearms. You can find some pictures of XVI-XVII Russian swords here.
I think this house organ of Pooty-Poot’s just participating in the peace offensive he’s been waging.