Dont know if this helps guys
A52-1, -3, -5, -11 completed as FB40's/FB VI
A52 -2, -4, -6,-7, -9 completed as PR40's
A52 -8, -10 completed as Mk 43's
My book has only a reference to the PR 16 of 87 PR Flight, 1944 and it states "RAAF azure blue overall, black serial"
In the marks and model discription states:
PR40: Australian unarmed PR version of FB40.
The Book is "Beaufort, Beaufighter and Mosquito in Australian Service"
Hope it is of some benefit