Lloyd: Fortunately, the Lefever owner checked the brl carefully BEFORE an opportunity for catastrophic failure and finger loss, and I agree this looks like corrosion at a weld line. Yes, Dr Gaddy stated that Twist was weaker than true damascus but interestingly, 4-6 iron crolle did less well than 3 iron crolle in the 1891 Birmingham Proof House testing. English 3 Iron Laminated Steel was #1. BTW: I just added another example of English 2 Iron Crolle.