British Anti-Aircraft Command Battledress Value

I have come to a point where I will have to sell a WW2 British Anti-Aircraft Command Battledress and am looking to find the value as It’s been some time since I purchased it and I have Identified the owner. It is missing the second set of ribbon bars and belonged to a brigadier at the time of the war. It appears that they added to the uniform as they progressed to Major-General before retiring in 1952 but strangely left their brigadiers collar tabs on.