It's difficult to be sure, but the silver spacers look thick in relation to the black spacers...... is it possible that the hardware is Doug Cream's silver?
I just developed the photos this weekend and noticed that too. It may very well be silver hardware - another oversight on the seller's part? Also the sheath is marked 7 4 which means the blade may be 4" instead of 5" as the seller described. I am going to pull it and measure it today.
I heard from a good friend who bought the knife from the original owner, and he confirmed the hilt and butt cap are Nickel Silver. He also confirmed that Joe Mason did the engraving.