Stevie Nicks' boarding pass...

4toddean

My girlfriend's sister Debra used to work for United Airlines. She was working at LAX and one night Stevie Nicks arrived late for her Flight to Sacramento and missed her flight. Apparently she was a little stressed because she had to be in Sacramento no matter what. Debra was able Get Stevie on the very next flight to Sacramento even though the flight was full. Stevie signed her own boarding pass for the flight she missed to Debra. The Boarding pass is in pristine condition . It has It has all the Flights' information Including Stevie's name printed as "Stephanie Nicks". It is for first class seat 1D. Stevie signed it this way:
Debra - much love, Stevie Nicks and she drew in a heart with a lil line on each side of the heart..
When Debra found Out what a huge fan of Stevie Nicks I was She gave the autographed boarding pass to my girlfriend to give to me. Currently it is being authenticated at PSA. it has been there since May 19th. it will be Encapsulated too.
Dos anyone have A ballpark figure of what This autograph is worth?.