At least I think they're AP1 - might be AP2.
Made in the UK, the cabinets were supposedly built under contract by prisoners at Channings Wood and Dartmoor.
(there is a suggestion that PW might refer to Prison Workers?....)
Picked them up some time ago - been in my shed since - needed refoaming.
Finally had them done and am amazed how good they are. Simple, unassuming 2-way design.
A delight to listen to - Open, clear, very natural on vocals. At the very least on a par with my JR149 and Rogers LS3/5a.
Whenever I come across gems like this I can't help wondering why we waste big bucks on hifi kit.