Despite various efforts, I remain puzzled by a few symbols I often see in annual record indexes. Attached you will find an image which contains three examples that I've patched together from a single index page. I've been able to decipher that the first example, containing the "S,P" references the "supplemental" records that appear handwritten at the end of each year. However, the meaning of the "backward 9" symbol in the second and third example evades me. I've seen in at the end of a record number and in between as reflected in the second and third example in the image, respectively. I know it looks like a 5, but it isn't. Any insights would be greatly appreciated. I have a feeling I will kick myself for not seeing the obvious here.