I think the hubs are Athena (judging by the skewer nuts), I'm guessing the wheelset was upgraded at some point. Sure wish I had the original Croce d'Aune hubs. I'm guessing the wheelset was tubular and therefore the original owner changed it out.
As requested, here is a photo. It turns out to be a 1990 Mondiale. Year is stamped in BB as 90c. Chrome stay.
I've definitely got my work cut out for me, lol.