Thanks Neil. Does that make it any more valuable?
Doubt it.
AFAIK all 58mm and 74mm knives are made with nickel-silver liners. 84mm and 91mm get alox now after having n-s before the early 50s, and 93mm gets n-s now after being brass in the early days. Despite being heavy, n-s liners are the best IMO. I've seen lots of cracked alox liners, and even a cracked brass liner - but have yet to see a cracked n-s liner.