All I can find is a reference to a Compagnia Nazionale Aeronautica aircraft named "ETA." The company was later sold to Caproni. CNA was an engine manufacturer which also produced a few airplanes.
CNA
I was thinking that this may be a Heinkel 119, but the 119 has a slightly cranked wing. I'm not seeing that in the picture. Hmmm.
http://www.warbirdsresourcegroup.org/LRG/images/he119-3.jpg
I just discovered this forum so I don't know if I will be repeating aircraft. Also, I don't yet know how to embed pictures here. But here's one:
Klayspics - Klay's Photos