I would say getting 3K would not be a problem at all, letter or no letter. Cue looks great! I know that it has been stated on here many times that they keep excellent records. I can only say in my case, I have a 1987 and mailed to S.W. She simply took the info that I gave her and put down on the letter. I then found the history of cue to be different. The LOA is just a generic form that states woods used and approx. date. If you know it is a S.W. then do you really need this? I think the LOA was 50$ + shipping and insurance both ways. So you might invest 100 bucks for a form to just file in a drawer? But to each his own.
A predate is infinitely easier to sell with the letter.