ID of aircraft fragment found on Rhodes

A few years ago, while wandering round the former Italian aerodrome known as Calato (Kalathos in Greek) I found a small section of aircraft alloy with no markings but traces of bluish-grey paint. In September 1942, a small SBS party raided the airfield, planted charges and blew up a large number of aircraft. SM 84s are known to have been included and possibly Ju 88s. The piece I found was on the top of a hill overlooking the site from the west. There was a slit trench nearby which must have taken some digging in that rocky terrain so possibly a soldier had taken it as a souvenir and dropped it there. A long shot, I know, but the depth of knowledge on this forum is often astounding!