Ju 86 K-4 (B 3 A)
Junkers delivered 40 Ju 86 K to Sweden in 1936.
SAAB produced 16 more ("Saab B 3"). The plane in the picture is a Saab B 3 A, serial number 0421.
It was produced in 1938 and is the only remaining plane of its kind in the world.
Engine: Bristol Pegasus.