I looked up the part number in my collection of parts list books, no hits. There are zero starting with 3568. This probably means an earlier number was superseded. All the '70 Sport Fury trunk badges are vertical, ie the color bars are below the key hole. Fury I, II and III don't have the color bars. In '71 the Sport Fury badges are horizontal with the color bars to the left of the key hole. The badge you have looks to be used on the '71 Sport Fury. Definitely not an S23, they used standard '70 badges.