The "Argentine" bayonet is a Yugoslavian M1948. These were used with the M1948 Short Rifle.
As C3shooter and safdeman indicate, the "Swedish" bayonet is Swiss, for the Stgw. 57 assault rifle. The Stgw. 57 had a very long service life, remaining in production from 1958-1983. Blade blanks were supplied by both Victorinox and Wenger, for assembly at the State arms factory, Waffenfabrik Bern.
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The bayonet cannot be abolished for the reason, if for no other, that it is the sole and exclusive embodiment of that willpower which, alone, both in war and everyday life, attains its object.—General M. I. Dragomirov