To my knowledge, they all work with the exception of 2 as they have been in concealed locations, however I would assume 80% work for safe measures. They are approximately 6 years old although would have been 5 years at the point they were taken offline.
There are also some mounts which I can count if required.
Open to offers as I would rather they went into use instead of landfill!
Let me know if interested
Matt
