Hey there, sorry to dig this up but I've been waiting for quite a long time to be able to join the rpf as I kept missing those short sign-up windows.
I don't know if you are still in need of this information but if not perhaps it will be of use to someone else. Below are pictures of the knives used in the film, the top set are a series of prototypes with the bottom most of the six and third from the bottom being selected as the hero knives. The relief on the handles are cast in chaste silver, the blades are stainless and the pins are brass. All of the knives are a bit larger than most practical straight razors, done as a stylistic choice for the film, but important to know if you are replicating. Their storage box is leather-bound.
Hope this helps/inspires someone.