As I have said previously, I know much less about German than British armour, but is this report known? It comes from the Manchester Guardian for 2 March 1919:
"One of the German tanks on display at the Horse Guards Parade took fire yesterday morning, a light carelessly thrown down catching two gallons of petrol in the fore part of the tank. There was a big blaze for a few minutes."
Schnuck and Hagen were both on display on Horse Guards. Thanks to someone who cannot be named, the Wikipedia article on the A7V is largely trustworthy.
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