“Clive, you have accounted for another two Saturdays and I have found an advert for the Magic Village showing the bands booked for June and July. That all narrows it down to 8 probably dates:March 16, 23 or 30, April 6. 20 or 27 and May 4 or 11. If we make the big assumption that the gig was to promote the single (Debora, released April 19), then we have 4 possible dates.”
“M.V. opened Saturday 9th March (with a set by Jacko Ogg). The first Tyrannosaurus album came out 5th July. The poster says that Tyranosaurus and Jacko will only appear on Saturday. That gives us only 16 likely dates. Take away known Saturday gigs (such as 13 April, Royal Festival Hall) and you have even fewer dates.”
The spelling of the band is with one "n" and I believe this is an early spelling. Their fan club membership card also had one n so I am guessing this poster was done before any record release!”