Thanks for all of the kind words regarding the book!
With regard to the book's history, it was found in a box in an New Hampshire attic by a daughter going through her late father's possessions. Along with this book, there were numerous other pre-hero books and several mega-keys including TOS 39, FF 1, and TTA 27. I ended up buying all of the Marvel books except FF 1 and FF 5 (in hindsight, I should have manned up and bought those as well). Most of the books were in the 6.0-8.0 range but all had unbelievable gloss and freshness. Ironically, the ST 89 was one of the nicest books in the collection. I thought it was probably a 9.2, but some slight spine wear must have held it back.