The IENA was an Italian automobile manufactured by Industria Economica Nazionale Automobili di Tommasi et Rizzi in Lodi from 1921 until 1925. Two versions were made, a 750cc light car or 1096cc sports car, it used a French four-cylinder Chapuis-Dornier engine.
About 150 were made.
References
David Burgess Wise, The New Illustrated Encyclopedia of Automobiles.