Could be ten a/w indeed, the wording when inducting the former RAF ones was different, bought seven, refurbished three.
Now its is: inducted ten.
Thanks for sharing 59, it is a Commando Mk.2A too.
So maybe 50 to 56 Commando Mk.3 and 57 to 59 Commando Mk.2A?
In one of the formation...