It appears the Dick Shiner sticker was placed but has fallen out leaving 623 of the 624 stickers. Set also has several updates, including the Cliff Branch HOF pre-rookie. These stamps have been glued on top of the original stamp. For example, the Cliff Branch is on top of the Drew Buie sticker in the album. I've spotted at least two others like this, but the person who placed them was careful enough to cover the old sticker that they are difficult to see.