This model 341 con Catena Falci blades are common in some regions of Italy. “Con Catena” translates as “with chain”. A different version of such attachment was used on old British blades. I assume it is to help carry over the cut matter. The 341C/55c Falci blade is suitable for trimming along the fence lines and tight corners, including woody weeds. This blade is plenty strong to cut bramble and small saplings. The 341C/55c Falci blade fits well on a straight one-grip snath.
This is a well-tensioned, old production blade.