When I request a letter of authentication, I'm looking to confirm the firearm I have in my hands is the same today as the day it left the factory. I believe that to be the purpose of such a letter. The current cost of the letter is the expense of my desire to have peace of mind. I have no expectations such a letter will make the firearm more valuable then it was before the letter. Should there be a mistake, I have no doubt that Dr. Jinks would gladly correct the error.