I thought the bulkhead had moved between the two squadrons on more than one occasion. When IX came back from Cyprus to Waddington in the mid 70s, OC IX and a party of his men put it into the small arms bay in the station armoury. I remember being amused by their being so paranoid that they padlocked it to the radiator. It stayed there until it was built into their new crewroom. If I recall, it had a painting of the ship in stormy seas, and the legend "Gegen Engeland" which seemed like a mix of Dutch and German.