I recently purchased a Gibson acoustic guitar. According to my research, the FON being S9532 should make it a 1959. Everything about it looks like it matches the 1959 J45 look, the one difference is the bridge. This guitar has a rectangular bridge that I have seen on older models. All of the other 1959s I have seen picture of have the "belly up" bridge. I have pictures I can post, but I am new to this forum and wanted to make a post to see if anyone is interested in helping out.
Thanks,
Matt