I picked up a nice pair of Velocity Deep V wheels from Craigslist - they're almost new. The wheels didn't come with a cog or lockring. I visited the LBS and they had Surly cogs and rings....we put the cog on w/no problem but the lockring went on about a 1/8 turn and it was obvious that it didn't fit. Their mechanic (who admitted that he didn't know anything about fixed gear bikes - he couldn't even find a lockring wrench!) thought there was something wrong with the hub - but it looks perfect. The threads are new.
On the Surly web site, I see their lockrings fit all but Campy and old French hubs. There's nothing on the hub that indicates brand or model.
Is there a way to tell for sure what kind of hub I have? If it's a Campy hub, where could I get the lock ring to fit? (didn't see any on Ebay)