1980/1982
RARE MODEL WITH INTERNAL SPOOL SAME BODY OF A ABU 154 BUT WITH EXTERNAL ROTOR
DIFFERENT SHAPE OF THE DRAG BUTTON ( IT'S ROUNDED )
THE SPOOL IS SIMILAR TO ABU 4 WITH WHITE LETTERS ON IT
THIS AND THE 355 ARE DISCONTINUED MODELS AND MARKETED ONLY IN EUROPE ESPECIALLY IN SCANDINAVIAN COUNTRIES