This was the second major acquisition of my collection. The fact that I nabbed #43, the same as my first 51-91, is just pure luck! The Damascus blade feels rough to the touch and you can tell where the different metals interact with each other. The knife feels quite heavy despite the handles being pure titanium, likely because they are milled from solid pieces. The action is extremely smooth and the balance is perfect. Learning tricks with a balisong like this is much easier. The latch uses pure tension to pop open, so there is never a worry about losing springs.