This is my first thread here, so I would like to welcome all of You, i find this forum very interesting and profesional.
The sabre was brought to europe by a few nations (or tribes) - the Avars, Magyars, Pechenegs and the Kipchaks. Today we can find a lot of early medival (VIII - XI century) sabres in Ukraine, Hungry, Slovakia and Poland (well only two, but i had to mention

).
Below - Kirpichnikov's sabre crossguard typology XI-XIII century
A Xth century sabre from Chernihiv (ukraine)
A Magyar sabre found in Poland (near Przemyśl)