Pre 1965 comics in general are harder to find in high grade. In 1965 many, but not all, comic readers became aware that comic books would be collectible in the future, hence more care was taken in handling the books. In additon the cover durability of comics decreased sometime in the mid 50's making books from the late 50's onward harder to find in grade. Check some different books via the CGC site dated 67 to 69, and then check the same titles from 57 to 59. this should demonstrate the lack of high grade books from the late 50's. For Batman 105 from 1957, which Steve has kindly posted above, a check of the census reveals 1 book at 8.5, 1 at 8.0, 3 at 7.5, and 6 graded at 7.0.