UK1 K6285 Avro AnsonGRMkI 1939orLater.jpg

[Joseph Testagrose]

[Asterix]

The orange and black triangle on the tail would indicate the markings from
summer 1940 or later.
It denotes the national insignia of Dutch military aircraft adopted in 1939.
Like the Poles, the Dutch would feature the marking on British aircraft
crewed by those airmen who
manage to evade capture by German forces in May of 1940.