In addition to having their C-record track group approved by NJS, it seems that Campagnolos frame parts, too can be found on some older NJS frames.
This Ohtaki, for instance, has Campagnolo fork and rear ends.
After further looking, I spotted this Uno on NJS export.
I'm not quite sure why the ends look different, maybe the builders shaped them differently. Either way, either of these frames would look super pimp with Campy/Cinelli NJS parts.