Hi Leif,
the first one I would call matulis or simple itak, the tip was most probable once pointed, I think it's the oldest from this pieces, turn of the centuries?
The second one you have researched well and I agree with you, age I would guess first quarter 20th century.
By the last one I would agree with you, WWII or a little bit later but I don't think the blade is older.
Nice pieces!
Regards,
Detlef