Note all of the comments made but I can assure you they are early Chorus hubs, I have the exact same wheels, and bought them from new. When Campag introduced Chorus a lot of the components where the same as the previous years Victory groupset, especially the hubs, see the link to the same hubs. Also a link to 8 speed freewheel, you can buy them and they are not silly prices.http://www.ebay.co.uk/itm/vintage-Campa ... 710wt_1154http://www.ebay.co.uk/itm/Sachs-8-speed ... 748wt_1126
Sadly by your pic we can't be sure they are Chorus, Triomphe, Victory or even early Veloce, Mirage or Centaur. The only sure way of telling is if they have 'S-T' written on the lcoknuts but you'll need to remove them to check. My gut feeling is that they are Mirage or Veloce as the central section seems a lot fatter than the Chorus versions and yours don't seem to have the same satin patina as the Chorus units - http://www.velobase.com/ViewComponent.a ... &AbsPos=46
. But whatever they are they are virtually functionally identical to other similar versions. Another good way to tell is by dating them by the rims or by the quick release's but I fear yours are missing.
Also, you may find later, more period correct hubs for your 8-speed desires as a freewheel can add a lot of extra weight over a cassette.