Oh yeah! This can indicate this blade as a Polish one.
The person on the second picture seems to be king
Sigismundus III Wasa, reigned
1587-1632 (Zygmunt III Waza in Polish). So the sabre is called "
Zygmuntowka", after his name. This one is late, 18th century example, while most of them where made at the beginning of his reigns ca. 1587, when he entered the to the Polish throne after the death of king
Stefan Batory. Some of the noblemens started to make sabres with the bust of king Batory, as the symbol of mourning, and some, on the contrary started to put Sigismundus on the blade. Of course the tradition survived and even in the 18th c. you can find both kings on the blades (Batory is much more popular), who knows maybe made as fakes
.
On the picture: first one is Batorowka sabre with bust of the King Stefan Batory, and the second one is Zygmuntowka
And what about the handle of this sabre?
Regards
Michal