Hello everyone who has replied to my posting,
Just wanted to thank you all for your time and direct, informative and funny responses.
It's certainly added some light to the situation, and great to understand it's not Lucifer as I had believed (not even sure where that belief even came from)
My main reason for posting was to eliminate the possibility that it could be worth a substantial sum, it is, as you point out, not in the greatest shape and so likely to be worth the amounts you suggest.
As for the blue one lost, that was at a Cult gig (Heaven and Hell tour?) in 2001 at the BrIxton Academy, London, UK. I was down the front, with said t shirt stuffed into my back pocket and so that was the end of that... it must have become dislodged, lost by me and found by someone else... I did have a sense of loss after that actually -- ! lol
Anyway, if anyone else has anything to add, please go ahead, once again, thanks for your comments