My opinion
Avia B.534-IVCountry of Origin: Czechoslovakia
Type: single-seat fighter biplane
Powerplant: one 850hp Hispano-Suiza HS 12Ydrs inline piston engine
Performance: maximum speed - 245mph; service ceiling - 34,775 ft; range - 360 miles
Weights: empty - 3219 lbs; maximum take-off weight - 4674 lb
Dimensions: span - 30' 10"; length - 26' 10"; height - 10' 2"; Wing area - 254 sq ft
Armament: 4 fixed forward firing 7.7mm Model 30 machine guns in forward fuselage; underwing Pantof
racks with provision for up to six 20kg (44lb) bombs