It's not Metal but I just bought the last remaining sets of this:
Rock Music Memorabilia - Bath and Knebworth Festivals 1969 - 1979
Numbers 3 and 4 out of 200, one for me and one for my best friend as a thank you for being there over the last year. I got a phone call this morning from the daughter of Freddy Bannister who promoted the original Knebworth festivals and had a good chat about many things and she agreed to let go the last 2 remaining copies of this set to me and recognised the importance and value of having these.
Very, very posh sounding lady though. I felt like I was speaking to royalty! The set for my friend is also going to embossed with a personal message free of charge which will make the set not just original and valuable but personable too.