I agree with Boedhi, i see no reason to change the sheath on this keris. The sheath is quite nice, in very good shape and if i am not mistaken, that is tortoise shell in the window of the pendok. It looks to me that your keris certainly has pamor. It is clearly evident in your photos. It just doesn't appear to be in any kind of high contrast material. Not all pamor is shiney nickel colored.
