Bücker Bü 133 Jungmeister
The Bücker Bü 133 Jungmeister is an advanced trainer of the Luftwaffe in the 1930s. It was a single-engine, single-seat biplane of wood and tubular steel construction and covered in fabric.
Source: Wikipedia — Bücker Bü 133 Jungmeister (CC BY-SA 4.0)