Hello nice looking cranks both of them. the stronglight as you mention will be close to orginal. the 'Athena' crankset is actually a 1'st gen Chorus set. that is one of my favorite crank types. I do not know what type BB you need but I just paid 100 for a Centar as that is the only one that seems to coem in a 111 symetrical
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk