Price wise, make an offer to Chris. I know I paid North of £100 a few years back for a much worse conditioned one, and that was when the Delta was not considered so worthy of restoration, now they are so panels are more sought after.
Without pre emptying Chris (his panel, so speak to him) I'd expect it to be worth well over £200 if you consider how much time it would save trying to make another or repair your own.