Green era Bluesbreakers recordings

[BklynBlue]

I've been listening to what's reported to be a BBC recording of "Curly", which the bootleg it comes from lists as having been recorded in January of '67, along with three other numbers.
Unlike the three numbers that come before it, this sounds to me like a live recording - it fades in on the song already in progress and when it ends, it sounds like applause over the band starting another number.
Although the structure is the same, Green's playing is much closer to what's become associated with "his sound". Mayall on second guitar gives him the room to pick more cleanly and not use distortion as on the studio version.
Also, the studio version was recorded in February and not released until March.
Does anyone know just how many BBC sessions the Green line-up of the Bluesbreakers were actually done? With the amount of material released during his tenure, I'd have to believe there were at least two.
If anyone has any information on the number and the tracks played, I'd appreciate it. Or even if they could shed some light on this individual track.