They look like Nervex lugs to me, not Capella. Capella have round protrusions with a hole in it (look at the diag tube on the brown one). The green one has no round protrusions and I believe these are Nervex lugs.
As per this guy (
https://www.sheldonbrown.com/retrora...percourse.html) 73 and 74 had Capella lugs and before they had Nervex. Are you sure of the year?