This one:
This precedes the Rocket Roll ones by a few years, it existed as early as 1973, Jim Lea would sometimes use it for TV miming, but I'm not sure whether he ever used his live or to record. It sounds nothing like Jim Lea's regular bass sound at the time, especially noticeable in the second vid which is a re-recording of the studio track for TV (Brit Musicians' Union rules required this back then) with an especially boisterous upfront bass mix.
The Rocket Roll basses looked different (and likely sounded better with their P/J pup combo), I believe they are also rarer because they were only produced for a short time:
That earlier 1973 model was in essence an EB-3L with wings and none of the kalamazoomph, a docile-sounding cult object, nothing more. I bought mine because I drooled for one as a teenager, but honestly the
Ric 4001 Ibanez bolt-on Ho I played at the time sounded better. Gorgeous to look at though.