some of them never get ID-ed...
but the Cinelli SC lugs (which these resemble) have a single hole in the bottom "flange" of the head lugs and the seat lug, maybe 6mm diameter, if you turn the frame upsidedown they either are there plain as day or not. Still doesn't mean that Cinelli may have made some without the holes, or a builder could have filled them (but why would he?). What ever you bought it's a good frame at a bargain price. You might get more info if you expand the search to the guys on the CR list (go to Classic Rendezvous and follow the instructions, choose the digest option and be sure to sign off completely or you'll be booted)