Nakajima KO-4: 3 x Japanese and 1 Siamese decal. The Japanes e Nakajima version of the french Nieuport-Delage NiD 29 fighter, biplane, which replaced the SPAD XIII after end of WWII (600 were built in Japan). The Siam bought some in France and built other under licence (40 in service in Siam)
