Hi Kevin,
Thanks for taking the time to look into "Avalon".
The museum states that the Crab was part of the 22nd Dragoons, while some internet sources say it was part of the Westminster Dragoons instead. The latter is based on an article in The Telegraph on William Hall, who is said to have commanded the very tank when it was put out of action in Broekhuizen (SW of Overloon). The museum however states that the tank was put out of action, close to Boxmeer (N of Overloon).
Another mystery is what caused the 20-ish penetrations on the right hand side of the tank, but I don't want to hijack the thread any further
Alex