We bought this m20 in original paint. the 2nd owner told us, it was running on a british airfield near hamburg after the war. it was driven by an old mechanic guy, and after he finished working, they gave him the bsa as an present...the signs might be original. has anyone an idea what the signs mean? is it really original? there are some details changed, but they seem old, for example the rear mudguard stay. frame number is wm2036020. thanks, jarek