The SLX has a few differences to later SLX sets, it has a sprung toggle switch for the "buddy box", is seven channels, has a Skyleader SL circuit board and no internal charging transformer. Later SLX were all 6 channel and had an internal battery charger transformer, it's type of a hybrid between an SL and a SLX.
The Clubman prototype doesn't even say Clubman on the badge, it's the same badge as a Skyleader SL. There's no "buddy box" switch either but does have a Clubman circuit board, charging transformer and the black Kraft Hayes joysticks, again a type of hybrid SL and Clubman.
They have both been used, and there's still castor fuel residue on both, so they were obviously working prototypes, but we are too late to ask the former owner about their history
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