Granted, there is no spur in any of the collector books that looks like this half spur that I dug in a lot on Cherry Street here in Vicksburg way back in 1986, but there is one, and only one (that I've found), that features a star in the position shown on the half in the first four photos below - and that is the famous Leech and Rigdon "CS" spur shown in the latter four photos.
As far as I know, this half spur is the only example of this type that has been found. Below is the famous Leech and Rigdon "CS" spur. This example sold for nearly $1900 on eBay.