Tom Dunne's Music & Me: I really should have more valuable music memorabilia

The right piece of Beatle's memorabilia can fetch millions.
The writer Ray Connolly, who I have talked to often, owns a bit of memorabilia. Quite a big bit actually. I was saddened to hear this week that he’d been ill, but mention of his name made me think of my own failings in the area of music collecting.
In this material world, I am not overly endowed with valuable records. I own one numbered edition of U2’s debut, U23, copies of which have at times sold for thousands. But beyond that, nada. How can this be?