I don't think I've heard of any Atlantii which didn't have serial numbers.
It's possible that it wasn't deeply stamped and may have filled in with paint - I'd double check the bb area with it super clean under high intensity direct light. - Jim / cyclofiend.com -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.