Fantastic Four Annual 6 - Silver Age Key - CGC 5.5 OW/W. Ive only got one slabbed book so this should not be an issue. There is a certain degree of variation between each persons interpretation of the grades but I have done my best to give a grade that most people would consider accurate. The item "Fantastic Four Annual 6 Silver Age Key CGC 5.5 OWithW" is in sale since Wednesday, October 17, 2018. This item is in the category "Collectibles\Comics\Silver Age (1956-69)\Superhero\Fantastic Four".The seller is "1coolcomics" and is located in Independence, Ohio. This item can be shipped worldwide.