I have a feeling I saw Man at Portsmouth Guildhall, but may be confusing it with Plymouth Guildhall where I definitely did see them at about that time. I also seem to remember seeing Badfinger (not Badger) at Portsmouth Guildhall and I thought they played second on the bill to Man. Of course none of this may be true. When did M&D play the Everlys numbers? I remember seeing them playing acoustic Because (Beatles) and Orbisons Sweet Dream Baby in March 1976 and I think that was at Warwick Uni, although they did play Plymouth Guildhall a few days after that as well....
I also bought a Chris Darrow album at some time in the mid 70s, but did I see him, hmmm...
A far wiser person than me has pointed out that the mind can play tricks. Another added that we tend to underestimate the time that a recent event took place, but overestimate the time following a distant event. Personally I am quite capable of both, for both. And at the same time, if not before.
According to the Sacred Book of Mannerisms, Plymouth Guildhall was played on 14 Feb 1974 by the 'Rhinos' line up. If 'Silks' was indeed performed in a town in the South West with a strong naval presence then it is more likely to be that one....although this would not tally with Mr Rover.
Mssrs Badfinger supported Man on the 'Slow Motion' tour and played Portsmouth Guildhall on 17 October 1974. As MM had left by then, I think we can safely assume 'Silks' would not have been played.
The two M & D acoustic numbers were played on the first few dates of the 'Welsh Connection' tour in during early 1976 - they played Warwick on 5 March, Portsmouth Guidhall 13 March and Hammersmith on 14 March, which is where I saw them and by which time they had definitely dropped the idea following one too many arguments as to which one could be Don that evening.
Typical Man - doing an unplugged set before the concept had caught on - and they gave it up! How they tease. Meanwhile...keep racking those brains!