Originally Posted by
Asturias56
The Morane-Saulnier MS 1500 Epervier fits the bill but not sure if it was ever used by the Swiss
That was a real stretch of the imagination: the Epervier didn't start life with an inline piston engine; wasn't used by the Swiss and wasn't a target tug.
Pilatus Porter fit the remit a bit better, even though it's not.