Not a surviving Aldon, but a surviving, and flying, Bf108 B-1 is HB-HEB at Lausanne. Built in 1938, wn 1988, bought by the Swiss Army in 1938 as A-201, it was on display at Zurich Airport for 30 years. It was restored starting in 2001 with its new first flight in 2011, as A-201. My photo is at Lausanne, soon after its restoration, when I was minding the flight line and was close to the action.