Teeth are in very good condition with minimal use, obvious mark on face of crank, no right-side crankarm unfortunately.
Campagnolo Croce d'Aune / Chorus Chainset.
170mm Arms - 42/53t Chainrings (this was from an 8 speed groupset but will work on 7 speed too.)
Lovely Croce D Aune, or slightly later 2nd edition Chorus (They shared the same chainsets)