ZA369 had the production serial BS051 indicating that it was a Strike variant and not a Trainer (they were BT0XX). Therefore, if this stick was from ZA369 it was from when it was a GR1. Just a little to add on the buttons etc: The ICO paddle switch on the lower front of the handgrip disengaged the nosewheel steering as well as instantly disengaging the autopilot and flight director. The autopilot engage/disengage button that had been removed and was formerly located to the left of the pitch/roll trim switch was removed as part of mod 1749 (from memory) which was the fitment of the Autopilot and Flight Director System control panel on top of the left coaming. The black cover over the weapon release button was, I believe, later removed once the nuclear delivery option ceased (it certainly was removed from the rear cockpit stick of trainer variants of GR4 and F3). The top button on the left of the handgrip was the radio transmit button and I cannot remember what the bottom was and I don't remember ever using it; it may have been a radio mute button. I will do some research.